iM 4,1-14,4 2011 iMac Graphics Card Upgrade

[Nguyen Duc Hieu]

Thanks for the link, but i have literally tried all of the commands like they have stated on the website. I tried looking around the USB with the „ls“ command and trying various possibilities. I got to the „/medium“ point, but from there it seems that there is nothing in there (typing ls command gives new line to type in)

I will try today again with another USB (if that makes sense) and see whether it gives me the same problem

I remember that I fell into similar situation like yours on my second time using the GRML Linux USB.
But I'm very sorry I can't remember how I overcame. It must have been something with the command syntax. It took me several hours searching the internet and reading some old books about Linux commands.

 

[fulltilt54]

AmethystBiosEditor

I've modified a bios editor to work on the Amethyst GPUs for tweaking purposes. These would include cards like the S7100X (M390X).

Amethyst is a sub architecture of Tonga. Previous editors will not work because the offsets have all been changed in the Amethyst cards, they use dynamic GPU voltages and speeds and have an array style selection depending on usage. I've labelled these mVL, mVM, and mVH for low, medium, high.

Please visit my github to get the latest version https://github.com/nikey22/AmethystBiosEditor
If you have a different Amethyst GPU ID, let me know and I will add it to the application in a future version.



Happy tweaking!

So is the s7100x now a working alternative to the high priced wx7100 for gaming in macOS and Windows, or am I missing something? I don’t see it in the first post, so I’ve always thought it was a Windows only card. Is it compatible with both 2011 and 2010 27” iMacs? Thanks for all of your hard work Nikey22, I was using your k2100m bios for years and it’s been flawless.

 

[RandomWithMac]

Hello again!

after some work and a lot of help from the people on this thread i managed to get the GPU running!

I will post results of the finished product when i have completed the installation of OS and patched with OCLP

Thanks again for the help!

 

[bladeneaera]

@bladeneaera
who better to reply to this one, right?

Here is the unbranded version of the vbios. No offence taken at all. Besides, I have my name obfuscated in 2 other areas of the vbios and the gpu controller code portions of the firmware that aren't visible in user land.

Happy About screens!

❤️ Ur such a good and gentle Person. Im Happy U understand me that i didnt inteend to offence anyone . Can U PM me i would really Love to donate U for this Work Well If U Accept Donation

 

[overshoot]

Hello,

I have now installed an Nvidia GTX765M on an iMac 27" 2010.
I have flashed the bios with the latest Nikey version.
I have also used opencore legacy 0.6.7 to get it to run Monterey 12.6.7
It's running a Core i7 2.8Ghz with 16GB of RAM and 1TB SSD if that matters.

Can we run an external display on this setup?
If I boot with the external display plugged in to the DP both display will be black. I have to hard reset the Mac to get it to work.
If I connect the 2nd display while booted, the internal display flashes but continues to work, the 2nd display doesn't activate.

Am I missing something here please?

 

[Ninjasrule]

I have a late 2009 27 inch iMac 2.8 i7. im stuck on high sierra and want to upgrade my graphics card to get metal support and to upgrade the MacOS. What graphics card would people recommend? Would the 765 Nvidia card only work if I flash the bios? Thank you

 

[wxzerg]

This is the M6100 VBIOS of the original graphics card on my Mac 11,3. I've tried all the VBIOS ROMs I can download from the forums, but they all have issues. They do not support DP signal input and output under 10.13.6. Not sure where the problem is, it's Dell's too. The red card, the video memory is very blurry and cannot be seen clearly, but the software detection shows that it is a Samsung chip. The display of the last R2 ROM of NIKE22 is normal, but the video input and output are not normal, WIN10 cannot enter the system, and a blue screen appears. What I can barely use now is the ROM that supports three types of video memory in the forum. The MAC shows R9 M380 2G, which is unstable and restarts soon. It can only be used under WIN10 system, and the unsigned M6100 driver is forced to be installed.

 

[KennyW]

This is my option, I also use linux. As I understand it, you need to find a TV to connect via the display port and I will see a picture on both monitors. After that, I need to install a new mac os open core / then everything will work as it should on one monitor, will I be able to give it back and use my fast linux?

i flashing 480GOPreduced_power - ok?

ps/ my salesman said he has 50 cards 480

It seems the RX480 (some could be a RX470 in disguise with hacked vBIOS) is back in supply. Now much cheaper than what I paid 3 years ago. Currently you can find one at ~US$80 in AlliExpress while the WX4150, which has a Metal score of only ~1/3 to 1/2 of that of RX480, is sold at ~$115. May be it is related to the lower compatibility of the former since v1.0 board runs only in iMac 2009 & 2010 while the rare to find v1.1 capable in iMac 2011. Also the former requires a 3 pipe heat sink for adequate heat dissipation while the latter can reuse the 2 pipe heat sink present in most iMac.

I got a purported RX480 with a hacked BIOS (recognised as RX580 in OSX & Windows). I flashed it with the RX480 GOP vBIOS here and it works well and shows its true identity as RX470. But anyway, the difference in performance between the RX470 & RX480 are so small that it can be neglected.

I have tested the latest EG vBIOS for RX480 and it works wonder.
My iMac has 3 internal SSDs - one for High Sierra, one for Monterey, and one for Ventura.
Windows 11 22H2 is installed on an external USB flash drive.
The High Sierra SSD is connected to the primary SATA 0 as default boot drive upon NVRAM reset (Command-Option-P-R) for troubleshooting if needed through the native Apple BootPicker.
The latest OCLP is also installed on this High Sierra SSD for booting into Monterey or Ventura or Windows 11.
I removed the internal DVD to install the USB3 hack for my iMac 2010. Thus, Windows 11 runs reliably on the external USB flash drive connected to the USB3 ports. The only drawback is that the USB3 ports are not bootable natively (not shown in Apple Bootpicker but ok in OCLP Bootpicker) and connection to the drive would be lost if allowed to sleep.

I tested the latest Diablo 4 under Windows 11. It is completely playable even in medium graphic settings.
The point to note is that you must tune down the power draw of the GPU to 67W by editing the vBIOS with Polaris BIOS Editor, otherwise the iMac would abruptly shutdown on launching the game.
Thus, I can delay my upgrade to M2 Mac for some more time.

========

BTW, with regard to AMD VBIOS flashing, now I prefer the OC OpenShell method.
It is mentioned in Answer 5 to Question 3 of Spoiler 8 FAQ in the 1st Wiki post.
Although it is said to be for experts, I find it to be the most convenient and easy one instead of the others.
While MacNB2 gave a detailed account here, I investigate and explore it further to simplify the procedure in my iMac.
He gave a zip package with a BOOT folder and amdvbflash.efi within.
But for us with OCLP loaded onto the internal drive, the OpenShell is already installed. Thus the BOOT folder isn't needed.

The steps are as followed:
Download the ESP Mounter pro v1.9.1 and run it to mount the EFI partition with OCLP installed on your Desktop.
On opening the EFI partition, you will see only a System folder and perhaps a BOOTLOG file. The EFI folder is hidden on the EFI partition and not accessible.
Download Kilometre (v1.32 for High Sierra, and v1.42 for Ventura) and run it with the Options of Hide Mac and Unix invisible files unchecked. Then in the opened Desktop window of Kilometre, you can click-open the EFI partition to now see the EFI folder with the APPLE folder and OC folder within.
I just create a AMD folder under the EFI folder co-existing with the APPLE & OC folder.
Put the amdvbflash.efi and the various RX470/480 VBIOS into that AMD folder. It won't be overwritten by any new OCLP that you install onto the boot drive.
Restart your iMac to OCLP BootPicker and press spacebar to bring up the UEFIShell Menu.
Navigate to and activate the OpenShell.
Then note the first listed FSXX with the command: map -b
Change to that FS by typing: FSXX (where XX is the 1st one listed above)
Change directory to the AMD folder we previously created: cd EFI/AMD
List the files within the AMD folder: ls
You should be able to see the amdvbflash.efi and the various vBIOS put there.
Just follow the other steps outlined by MacNB2.
To find out the adapter no. of your AMD GPU: amdvbflash -i
To flash your new.ROM: amdvbflash -p 0 new.rom
where 0 is the adapter number you got from above, and new.rom the rom file you want to flash into your AMD card.
You may give a force flash by adding in the command: -f
That may be needed in case of ID mismatch.

 

[KennyW]

I used clover on hackintosh, there were a lot of settings and it wasn't easy to figure it out, I spent a lot of time running dell alienvair mac os / everything is identical here for you and me - please make an image of the open core with the command dd if=disk.... of= so that I just write it to my boot area of the disk/ OCLP with the same command - I understand a similar program?

I will physically disconnect all the other disks and then, in theory, I should see the picture on the built-in monitor?

at the expense of cooling, I made a custom one, I will hope for success, I added aluminum plates to cool the memory, they are polished to the desired thickness,
I will have to remove catalina on the patcher, I already realized that it was a mistake, I will return a high sierra - this is a lot of partition done on another large disk

if I turn on another monitor, will I be able to see the picture and adjust everything? I really want to do without it)))

This thread is for iMac. Please check the title.
I know nothing of clover on hackintosh.
You should head to those forums in other websites to ask again.

 

[maccoops]

AMD M5100 2GB support (AMD Radeon R9 M370X 2GB)

This card has been produced in many variants, currently I know of at least three different types and ident strings:

Type	ident	BIOS version	device-id	working
Green AMD PCB	109-C93157-00A_03	W5170M	6820	yes
Blue AMD PCB	109-C42271-01_02	M5100-Dell	6821	most likely
Red DELL PCB	109-C42241-01_02	M5100-DELL	6821	yes

This GPU will be identified by the macOS as AMD FirePro M5100 and by MetalBench and GeekBench5 as AMD Radeon R9 M370X. The current vBIOS supports Elpida video memory.

Warning:
This card is easy to install but complex to manage during the initial software installation.
You need to install OpenCore in advance and add the changes posted before booting into macOS.

The card will not boot into macOS without the adjusted CAIL values in the config.plist.

Tests:
- iMac12,2: sleep/wake broken - black screen on cold boot needs PRAM reset each time
- iMac12,1: sleep/wake broken - black screen on cold boot needs PRAM reset each time
- iMac11,x wake fully functional with OCLP 0.3.2 and later
- iMac10,1 27": tested

Use the M5100-DELL vBIOS for the red Dell card, only!

After installing the card it will not simply boot directly into any macOS version (WindowServer crash) unless you install and use OpenCore and apply the settings described below (I will try to get the changes added to OCLP, later).

So you need to install OpenCore onto your boot disk before booting in your current installation in normal multi user mode.

In case you have a working system before changing the card just run OLCP, select the proper MXM GPU type to AMD (GCN) and build and install OpenCore to your system and reboot. Otherwise use another Mac to create the OC settings or create a OpenCore BootCD.

The settings needed are equivalent with adding radpg=15 -wegtree apdpmod=pikera to the boot-args in the config.plist of OpenCore.

This GPU type has been used in 2015 15" MacBookPro models.

Tested systems:
- iMac12,2: sleep/wake broken on some systems, but others reports success?
- iMac12,1: not tested
- iMac11,1: no problems
- iMac11,2: no problems
- iMac11,3: no problems

Memory support:
1. Elpida/Samsung, 2. Hynix BFR and 3. Hynix AFR memory.

Known issues:
- external display sync is difficult on all systems and needs the main LCD or the system to go to display sleep once after connecting the external display

Known features:
- Airplay is working until Catalina as with any other AMD metal card on iMac11,x and iMac12,2 (without using QuickSync)
- high metal scores
- boot screen with OpenCore
- brightness control working
- GPU power management working
- needs macOS 10.8.3 or better (HD7000 support)
- still full Monterey support (no root patching needed unlike Kepler)

Performance:
- GeekBench Metal and OpenCL: > 10.000
- Valley DELL: 23.46 FPS, 981 Score
- MetalBench: 31 MRays/s
- CoreClock: 300 MHz idle - 850 MHz max
- MemoryClock: 150 MHz idle - 1125 MHz max
- PowerDraw: 5W idle - 35W max

Warnings:
- do not flash the vBIOS from the DELL card onto the other two cards, it will cause a bad flash and will make the card unusable
- a bad flash prevents the iMac from booting and running the Linux flash utility, again!
- bad flashes can only be cured by using a CH341A clip or some other nasty tricks

News:
- OCLP 0.3.2 and later support this card. So you can update OC using OCLP in future. Nevertheless the boot strap process is complex since you cannot boot the normal macOS unless OC has been installed in advance!

Download:
- please use the site to download EFI vBIOS versions. please check the readme file!

Quite a while ago, I messed up my iMac 2011 27" with AMD M5100 card. I was moving between MacOS versions during a long day, and at a certain point I could no longer boot succesfully - no display. I realised that I had forgotten to add the needed shim, so assumed I burnt out the video card.

I have installed another AMD 5100M, with the shim. I flashed it first, with my clip prog (M5100-EnableGop-LVDS.rom). I created a bootable OCLP USB with the correct settings for this card (using the GUI) on another mac.

When I power up, I get LEDs 1,2 and 4. I hear the chime and the fans. But no LED 3 and no display.

I have replaced SMC battery, done SMC reset and PRAM reset, I also disconnected new SSD just in case (OCLP USB remained connected).

I also reseated all four of the cables between the panel and the logic board 5 or 6 times.

[Update] I was politely 🤣 informed on OCLP paradise that LVDS is the wrong vBIOS for my GPU. But I cannot find the right vBIOS for this GPU. Again, it's a AMD M5100 and my system is a 27" iMac mid-2011 12,2.

 

[york026]

Good afternoon! I've been running OS X Big Sur for a while now on my upgraded iMac 2011.
Inside I have an GTX 880M running and it's working great most of the time.

Sometimes with certain websites I browse with Chrome the iMac freezes and only an hard reset can fix this.
A few days ago I installed MineCraft and these random crashes/freezes seem to happen more often.
It seems to me it's Java that is crashing, but i'm not sure if it's an software or hardware problem.

Can someone please explain to me if it's my GPU that starts failing or it's just a bug I can try to fix by updating some drivers. Thank you very much!



The crashreport shows the following:

Process: java [825]
Path: /Users/USER/Library/Application Support/minecraft/*/jre.bundle/Contents/Home/bin/java
Identifier: java
Version: 17.0.3 (7)
Code Type: X86-64 (Native)
Parent Process: launcher [390]
Responsible: launcher [390]
User ID: 501



Date/Time: 2023-07-07 14:16:21.557 +0200
OS Version: macOS 11.7.8 (20G1351)
Report Version: 12


Time Awake Since Boot: 1700 seconds

System Integrity Protection: enabled


Crashed Thread: 0 Java: Render thread Dispatch queue: com.apple.main-thread



Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_PROTECTION_FAILURE at 0x0000000103dbb000
Exception Note: EXC_CORPSE_NOTIFY


VM Regions Near 0x103dbb000:
__LINKEDIT 103db0000-103dbb000 [ 44K] r--/rwx SM=COW /Users/*/Library/Application Support/minecraft/*/jre.bundle/Contents/Home/lib/libjimage.dylib
--> VM_ALLOCATE 103dbb000-103dbc000 [ 4K] ---/rwx SM=NUL
VM_ALLOCATE 103dbc000-103dbd000 [ 4K] r--/rwx SM=PRV


Application Specific Information:
abort() called


Application Specific Signatures:
Graphics hardware encountered an error and was reset: 0x0000002b

^^^^^

 

[BertHiddink]

Hello,

I have now installed an Nvidia GTX765M on an iMac 27" 2010.
I have flashed the bios with the latest Nikey version.
I have also used opencore legacy 0.6.7 to get it to run Monterey 12.6.7
It's running a Core i7 2.8Ghz with 16GB of RAM and 1TB SSD if that matters.

Can we run an external display on this setup?
If I boot with the external display plugged in to the DP both display will be black. I have to hard reset the Mac to get it to work.
If I connect the 2nd display while booted, the internal display flashes but continues to work, the 2nd display doesn't activate.

Am I missing something here please?

I can just inform that am running exactly the same setup with an external Cinema Display 27" Thunderbold without any issues...

 

[maccoops]

I have the exact same problem even after I installed the modded EG2 bios and I have a working oem boot screen after holding the "option" key.

I cannot get any kind of rescue disk to boot from, whether this is a rescue CD or rescue USB. I tried preparing it following the guides, creating the needed folders etc, but nothing. I get to a black screen.

If anyone managed to create a rescue CD/USB that is working please let us know. I need to find way to get back to the desktop in case my OC folder is messed up.
Thanks.

Hi Mr Vinegar, can you help me out a bit regarding your AMD M5100 (not NVidia K5100M) install please? My main problem is with finding the correct vBIOS, can you point me to it please?

 

[schulheft]

Hi everyone, I'm glad I found this big community working hard to give a second life to old Macs.
I have a 24 inch Early 2009 iMac9,1 and its been my daily for more than 10 years but the GPU is failing (random shutdowns).

I can't find a good price M5100 with Elpida memory and i'm not sure what kind of heatsink mod is needed for a M6100 install.

I'm looking for someone with a iMac9,1 to give me some guidance. Thanks

Hello, so I finally bought a M5100 but it seems to have a Hynix BFR memory
The EnableGop91 vBIOS on github is not compatible with those memory chips am I right?

Thanks

 

[maccoops]

Hello, so I finally bought a M5100 but it seems to have a Hynix BFR memory
The EnableGop91 vBIOS on github is not compatible with those memory chips am I right?

Thanks

I see it's a red card, so according to the M5100 page in this thread, it is a Dell card. The text seems to be suggesting that there is a Dell version of the vBIOS but I just looked and cannot see it. I would wait for someone who knows what they are doing and/or has successfully used this card in a 9,1 iMac before flashing vBIOS which may be wrong for your card/iMac combo. Sorry I can't be more help. I'm also waiting for advice on this card!

 

[schulheft]

I see it's a red card, so according to the M5100 page in this thread, it is a Dell card. The text seems to be suggesting that there is a Dell version of the vBIOS but I just looked and cannot see it. I would wait for someone who knows what they are doing and/or has successfully used this card in a 9,1 iMac before flashing vBIOS which may be wrong for your card/iMac combo. Sorry I can't be more help. I'm also waiting for advice on this card!

The EnableGop9,1 vBIOS is for elpida memory chips maybe? Lets wait for an alternative vBIOS.
Which memory chips has your M5100?

 

[slychen]

Hi nikey22@ Ausdauersportler@
Tested Dell M61000 in macOS everything is fine, windows 10 can not install the driver tried multiple versions are failed.
View attachment 2031693
View attachment 2031691
Using aida64 to detect the model number HD8950M driver detection tool also identified as HD8950 matching the installation of the driver failed to come to the Chinese hardware detection tool (Lu Master) to detect the identification of the model number R9 M380.

GPU-Z check ID hardware manufacturer for Apple, I am thinking that the installation of the driver failure is not the device ID error caused by the failure to match the installation of the driver, can you fix the hardware ID inside the vbios to match the installation of the correct driver?

View attachment 2031694

View attachment 2031695
Übersetzt mit www.DeepL.com/Translator (kostenlose Version)

I have Dell M61000 card but can't work in MACOS.did you upgrade vbios of Dell M61000? can you share this vbios if you upgrade?

 

[madvinegar]

Hi Mr Vinegar, can you help me out a bit regarding your AMD M5100 (not NVidia K5100M) install please? My main problem is with finding the correct vBIOS, can you point me to it please?

You need to find out what brand the card is and what brand the memory chips on the card are.

Then you use this link to download the correct vbios.

IMAC-EFI-BOOT-SCREEN/GOP at main · Ausdauersportler/IMAC-EFI-BOOT-SCREEN

How to create an EFI boot screen vBIOS for Apple Late 2009 to Mid 2011 iMac systems using AMD MXM graphics cards - Ausdauersportler/IMAC-EFI-BOOT-SCREEN

github.com

 

[rockygo46]

Dear friends I have successfully installed this graphics card on iMac 27" mid 2011 : nVIDIA Quadro K3100M 4GB .
I installed osx Monterey and everything works fine, the only thing I didn't understand is if the Odd sensor to monitor the GPU temperature is working, I have Installed the Mac fan control application and in the ODD item the temperature was detected, my question is: can I trust or is it better to set the speed of the fans of the odd from automatic to manual by adjusting them to half the maximum speed? , I'm doing it continuously or do I set the fan RPM values based on the minimum and maximum temperature that the ODD sensor detects? (Provided that the value works and is reliable detected ), anyway can you advise me how to setup Mac fan control ? Thanks for the replies!

 

[applesaft]

Hello,
i have a iMac 11,2 (2010, 21.5). Earlier i have swapped my CPU to a 860s and was happy running High Sierra. But since Software support is getting bad, i thought about upgrading the GPU to a k2100m. I shot one for about 50$ from China with the Elpida memory.
Now i have planted it into my system and i get only the first 3 Diagnostic LEDs shining up. I have flashed the GPU with the vBios of @nikey22 with the @xanderon usb stick method. The LCD screen stays dark after i boot up the system.

On an external monitor i get an image. This way I have then upgraded the OS to Big Sur with OpenCore hoping this might change anything. But with Big Sur as well my LCD stays black.

I have done PRAM reset and holding the alt/option key.
To find the issue i have put in back the original AMD card. The LCD worked again. Now i wonder where the issue could be.
I would like to put the K2100m back in.

 

[maccoops]

You need to find out what brand the card is and what brand the memory chips on the card are.

Then you use this link to download the correct vbios.

IMAC-EFI-BOOT-SCREEN/GOP at main · Ausdauersportler/IMAC-EFI-BOOT-SCREEN

How to create an EFI boot screen vBIOS for Apple Late 2009 to Mid 2011 iMac systems using AMD MXM graphics cards - Ausdauersportler/IMAC-EFI-BOOT-SCREEN

github.com

Thanks, that's what I thought but for some reason I had the impression that I was being told in OCLP Paradise that this was the wrong vBIOS. Flashing it now - and thanks again

 

[maccoops]

Hello,
i have a iMac 11,2 (2010, 21.5). Earlier i have swapped my CPU to a 860s and was happy running High Sierra. But since Software support is getting bad, i thought about upgrading the GPU to a k2100m. I shoot one for about 50$ from china with the Elpida memory.
Now i have planted it into my system and i get only the first 3 LED shining up. I have flashed the GPU with the vBios of @nickey22 with the @xanderon usb stick method. The LCD screen stays dark after i boot up the system. On an external monitor i get an image. I have actually updated the OS to Big Sur already with OpenCore hoping this might change anything. I have done PRAM reset and holding the alt/option key.
To find the issue i have put in back the original AMD card. The LCD worked again. Now i wonder where i issue could be.
I would like to put the K2100m back in.

I would think you will need to use OCLP with this card. From the vBIOS post you linked to:

• You still will need to use OpenCore for your boot screen and brightness parameters with this vbios.

 

[applesaft]

Hello,
i have a iMac 11,2 (2010, 21.5). Earlier i have swapped my CPU to a 860s and was happy running High Sierra. But since Software support is getting bad, i thought about upgrading the GPU to a k2100m. I shot one for about 50$ from China with the Elpida memory.
Now i have planted it into my system and i get only the first 3 Diagnostic LEDs shining up. I have flashed the GPU with the vBios of @nickey22 with the @xanderon usb stick method. The LCD screen stays dark after i boot up the system.

On an external monitor i get an image. This way I have then upgraded the OS to Big Sur with OpenCore hoping this might change anything. But with Big Sur my LCD stays black aswell.

I have done PRAM reset and holding the alt/option key.
To find the issue i have put in back the original AMD card. The LCD worked again. Now i wonder where the issue could be.
I would like to put the K2100m back in.

I would think you will need to use OCLP with this card. From the vBIOS post you linked to:

I have installed OpenCore from OCLP with my external screen and then upgrade the OS to Big Sur as it was explained on OCLP.

 

[Nguyen Duc Hieu]

Dear friends I have successfully installed this graphics card on iMac 27" mid 2011 : nVIDIA Quadro K3100M 4GB .
I installed osx Monterey and everything works fine, the only thing I didn't understand is if the Odd sensor to monitor the GPU temperature is working, I have Installed the Mac fan control application and in the ODD item the temperature was detected, my question is: can I trust or is it better to set the speed of the fans of the odd from automatic to manual by adjusting them to half the maximum speed? , I'm doing it continuously or do I set the fan RPM values based on the minimum and maximum temperature that the ODD sensor detects? (Provided that the value works and is reliable detected ), anyway can you advise me how to setup Mac fan control ? Thanks for the replies!

If you have fixed the ODD temp sensor on the GPU heatsink, then I suggest you set Mac Fan Control to adjust fan speed by ODD sensor. Max fan at 60 degrees Celsius.

 

[HaHwaNe]

Hello,

I received an iMac 2011 27-inch (A1312) model from an acquaintance, but there is a graphic card failure symptom. (Vertical lines appear and cannot proceed from the Apple logo)

The specification is a model with i5 2400 RAM 4GB and 6970m.

When the faulty graphics card was installed, only the apple logo appeared and the screen stopped with a line, but the booting sound was normal.

I disassembled it, ripped out the graphics card, obtained a K2100m Quadro (purchased one with Vbios for Mac) and installed it. The backlight doesn't seem to come on either.

When I searched, there was talk of resetting the pram and the need to use a patcher... I'm confused because it's my first Mac.

First of all, I tried to enter the boot menu by creating a bootable USB in High Sierra, but the screen does not come out either.

When the screen goes blank, nothing progresses.

Since the screen does not appear, it is not possible to know what version of the OS is currently installed on the Mac.

First of all, since the Apple logo originally came out, I'm looking at two possibilities.


1. The purchased graphic card is broken

2. Is the OS not supported because it is an older version than High Sierra?

3. In addition, I need a patch that I don't know about


What I thought was to replace the graphics card with K2100m, turn on the screen immediately, boot from USB and do a clean install of High Sierra, but it doesn't work like I thought. What could be the reason?...

It's embarrassing because it seems to be a situation where you need an old AMD graphics card for some reason. I've already spent on the K2100m and I have to buy an older graphics card again..

Please help me!