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2nd LED comes only up if the BIOS chip is containing a valid and usable BIOS. HP cards usually do not have one...
Sorry. Does this mean the card doesn't have a BIOS chip, or doesn't have a BIOS installed on the chip? I assume the former (no chip at all) can't be flashed and the latter, with chip, CAN be flashed, correct? How does one tell from an eBay listing whether an HP card has a BIOS chip or not?
 
Sorry. Does this mean the card doesn't have a BIOS chip, or doesn't have a BIOS installed on the chip? I assume the former (no chip at all) can't be flashed and the latter, with chip, CAN be flashed, correct? How does one tell from an eBay listing whether an HP card has a BIOS chip or not?
There are a few recent HP cards coming without a chip. Take a look at the first post, we have seen WX4170 w/o chips. Normally the cards have a chip (because they are identical to the DELL counterparts), but the AMD cards are different, even in function.
 
Thanks once again! So the NVidia cards will all have a chip and can be flashed? On eBay the HP cards cost about 1/2 the price of the Dell ones! 🤷‍♂️🤷‍♂️🤷‍♂️ But they both have this designator: N15P-Q3-A1 2GB GDDR5 and I assume this means they're identical (even though of course the mfr. part number, Dell vs. HP, is different). You're THE BEST!!! Thanks!!
 
Thanks once again! So the NVidia cards will all have a chip and can be flashed? On eBay the HP cards cost about 1/2 the price of the Dell ones! 🤷‍♂️🤷‍♂️🤷‍♂️ But they both have this designator: N15P-Q3-A1 2GB GDDR5 and I assume this means they're identical (even though of course the mfr. part number, Dell vs. HP, is different). You're THE BEST!!! Thanks!!
The vram chips brand is also important. Check first post. Be aware with elpia and hinyx bfr ones...
 
And I can't tell how to verify that an HP card has a chip. The pictures in Post #1 are not identified so I don't know where to look. The "million miles away" is great. Like the Cover-Ups version, too. Thanks for that, too!
The vram chips brand is also important. Check first post. Be aware with elpia and hinyx bfr ones...
But no way you're gonna' find out in the eBay post which vram chips it's got. Need a picture, and where the heqq is it? Same as the BIOS chip? (sounds like it but just being sure) THANKS!
 
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And I can't tell how to verify that an HP card has a chip. The pictures in Post #1 are not identified so I don't know where to look. The "million miles away" is great. Like the Cover-Ups version, too. Thanks for that, too!

But no way you're gonna' find out in the eBay post which vram chips it's got. Need a picture, and where the heqq is it? Same as the BIOS chip? (sounds like it but just being sure) THANKS!
You can ask to the seller before buying...
 
What’s the best Mac OS version for a i7 2011 iMac? Anything higher than high Sierra since I have a k4100m.
 
GeForce GTX 880M - Full Trottle with Macs Fan Control

(don't use automatic MacsFanControl rpm) - risk of overheating !


:cool: MacsFanControl (now max. 58° Celsius on GPU heatsink) :cool:

- ODD 2450rpm
- HDD 5450rpm
- CPU 2000rpm



View attachment 1731487


;) MAKE SURE: DON'T OVERHEAT YOUR GPU ;)


View attachment 1731494

NO MORE Blue Screen, Green Screen, Black Screen - stay cool !!!

I second the need for cooling.


I ran my cpu fan on auto until my power supply starting making worrisome electrical buzzing noises. It was hovering in the upper 60s under load. Now when i push the cpu and gpu I just set the odd and cpu fans to 2000 rpm, it's not loud and no more electrical buzz.

Now who is ready to liquid cool their imac? One if us has got to be crazy enough, right?
 
Please help :)

Is there anybody running an iMac 2011 system with K610M/K1100M/K2100M running the latest version of the OpenCore package (0.6.6) posted here and confirm that it is working in general.

Please just post back the machine and card and OC versions and OS in a single line like these two examples:

iMac12.2 / K2100M / OC 0.6.6. / Big Sur 11.2.1 / Micropatcher
iMac12.1 / K1100M / OC 0.6.6. / High Sierra / native
iMac12.1 / K1100M / OC 0.6.6. / Catalina / @dosdude1

Thanks in advance

BTW: Did you need to change something in the supplied config files to make it work other than renaming it?
 
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But at least your screen would be on. Not sure that's it, or at least the only problem.

Oem bios shown in the nv flash screenshot don't match the ones witten on nikey22's original page. I'm also not sure that nikey22's list is exclusive though.
Would it make sense to donload the 80.04.E8.00.1D flash it and than try again? I know the vram isnt the same either so just shoting in the dark.
 
I need some help.

I successfully flashed a 780M and installed it on my 2009 i7 iMac. As I intend to use only windows 10 on this machine, I installed Windows 10 via a USB stick. ("UEFI Mode") Also, to take full advantage of the hardware, I installed BootCamp drivers version 6 using the escalated privileges trick, and on top of that the latest NVIDIA web drivers. Also turned off automatic driver updates from windows.

Now, after reboot, I get a black screen when I should get the windows login screen, right after the windows logo with circlular dots. If I hard reset 3 times, it goes into safe boot mode (with displays), where I can uninstall the NVIDIA driver and start over. But that NVIDIA driver just doesn't seem to work.

BTW, this is not an issue with 2009 iMacs needing a patched AGC KEXT, as I have done that part. Like I said, I get displays in safe boot mode. So this seems to be a driver issue.

So, can someone shed some light on what the best drivers are for my setup? (2009 i7 iMac, UEFI Windows 10, 780M)
 
I need some help.

I successfully flashed a 780M and installed it on my 2009 i7 iMac. As I intend to use only windows 10 on this machine, I installed Windows 10 via a USB stick. ("UEFI Mode") Also, to take full advantage of the hardware, I installed BootCamp drivers version 6 using the escalated privileges trick, and on top of that the latest NVIDIA web drivers. Also turned off automatic driver updates from windows.

Now, after reboot, I get a black screen when I should get the windows login screen, right after the windows logo with circlular dots. If I hard reset 3 times, it goes into safe boot mode (with displays), where I can uninstall the NVIDIA driver and start over. But that NVIDIA driver just doesn't seem to work.

BTW, this is not an issue with 2009 iMacs needing a patched AGC KEXT, as I have done that part. Like I said, I get displays in safe boot mode. So this seems to be a driver issue.

So, can someone shed some light on what the best drivers are for my setup? (2009 i7 iMac, UEFI Windows 10, 780M)
I used windows 10 installed on a partition in legacy mode and let it handle it's own drivers automatically. I took cake to only install boot camp drivers when necessary ( like for cirrus sound) and did not mess with the latest web drivers from Nvidia. Seems to run stable. I use windows 10 only for games, so my use case is different than yours.

We are running unsupported OS with a unsupported GPU with drivers that were not meant to jive with one another.... Best to not install the latest updates for everything in my opinion.

Hope this helps.
 
I used windows 10 installed on a partition in legacy mode and let it handle it's own drivers automatically. I took cake to only install boot camp drivers when necessary ( like for cirrus sound) and did not mess with the latest web drivers from Nvidia. Seems to run stable. I use windows 10 only for games, so my use case is different than yours.

We are running unsupported OS with a unsupported GPU with drivers that were not meant to jive with one another.... Best to not install the latest updates for everything in my opinion.

Hope this helps.
I had a bad feeling that being UEFI and not Legacy had a part in the troubles. How did you get legacy mode? Did you use an optical drive? My optical drive is dead, and I couldn’t get around that. That’s why I ended up with UEFI. It sounds better than Legacy, but legacy is what we’re after. Ironic
 
I had a bad feeling that being UEFI and not Legacy had a part in the troubles. How did you get legacy mode? Did you use an optical drive? My optical drive is dead, and I couldn’t get around that. That’s why I ended up with UEFI. It sounds better than Legacy, but legacy is what we’re after. Ironic
I found some YouTube video and used the dvd drive. Used a dual layer dvd on my windows machine to make a bootable disc. The rest was cake.

 
As I am trying to connect (from a separate window computer) I keep getting "Connection timed out". I booted my working computer from the GRML linux flash to make sure that the usb was created properly.

Disconnected the SSD in the IMAC and plugged in the USB. The computer turns on (screen is black as expected).
I enabled client and server SSH through powershell and still doesn't connect to the IMAC
Hi Kranny36, I noticed that GRML linux flash usb solution didn't have DHCP activated (in my case). To get the router assigned an IP-Adress to Linux live system I needed to push a few keys on a keyboard connected via usb (some standard cherry or whatever keyboard). I needed to hit
  • N (for changing network settings)
    1.jpg
  • 5x Return (accepting different dialog boxes)
    2.jpg
    3.jpg
    4.jpg
    5.jpg
    6.jpg
  • E (Exit)
    7.jpg
  • Return
    9.jpg
  • "arrow right" (for choosing "quit")
  • Return
This should enable GRML Linux to receive local IP-address from your router. You can test this by trying USB live stick on a mac with working internal LCS screen... Just have a look at the pics to understand what you are blindly doing.
Good luck.
 
Hi Kranny36, I noticed that GRML linux flash usb solution didn't have DHCP activated (in my case). To get the router assigned an IP-Adress to Linux live system I needed to push a few keys on a keyboard connected via usb (some standard cherry or whatever keyboard). I needed to hit
This should enable GRML Linux to receive local IP-address from your router. You can test this by trying USB live stick on a mac with working internal LCS screen... Just have a look at the pics to understand what you are blindly doing.
Good luck.
This is not the case! DHCP is activated by default and it has been all the time!

You can of course use a series of such keystroke to use the WLAN/WiFi card, too. The bad thing there it chosing the current WiFi network and entering the key.

Hint: You can make the complete USB writeable (gmrl.org for details) and configure your wifi in advance using another machine.
 
Hi Kranny36, I noticed that GRML linux flash usb solution didn't have DHCP activated (in my case). To get the router assigned an IP-Adress to Linux live system I needed to push a few keys on a keyboard connected via usb (some standard cherry or whatever keyboard). I needed to hit
This should enable GRML Linux to receive local IP-address from your router. You can test this by trying USB live stick on a mac with working internal LCS screen... Just have a look at the pics to understand what you are blindly doing.
Good luck.
That worked perfectly. Thank you very much!

EDIT: Ausdauersportler: maybe I created the usb incorrect or something. But following searges steps worked and I could connect right away.
 
That worked perfectly. Thank you very much!

EDIT: Ausdauersportler: maybe I created the usb incorrect or something. But following searges steps worked and I could connect right away.
I like sharing news, but sharing wrong information will confuse the people later on. DCHP is activated and the only thing you have to do is waiting until the machines shows up on your internal router config page.

You can cross check your own Linux flash utility after flashing. Now the internal display will show you what happens on boot and if the LAN gets activated properly. You can even log in directly using the keyboard.
 
Hi guys,

Like many, I've been quietly lurking this amazing thread and planning my GPU upgrade for my iMac. But alas, things didn't work as I'd expected and now I'm stuck with a black screen even after piecing together a guide. So here I am looking for some sagely guidance from the masters on what my next steps should be.

Long story shot, so I have a late-2009 27" iMac (A1312, EMC 2374) with a dead HD 4850. I reflowed the damned thing once, worked for half a year before giving up on me for the last time. Thereafter no reflowing attempts saved it. I then bought a 3-pipe heatsink, a GTX880M 8GB and an intel Core i7-860. I installed them and booted up the machine. No boot screen (expected) but it works (see image attached)! However I also noted that it was pretty unstable, some boots are successful and some aren't (black screen throughout). Some get me to the desktop but just hangs there. PRAM resets don't solve them. I guessed that it was probably a vbios issue since I have not yet flashed the latest rom.

Then I followed the following plan:
  1. Disabled SIP
  2. Backed up original roms using RomTool
  3. Installed all packages (AGC, BacklightFixup, FakeSMC, vit9696) via Sierra and High Sierra Package Installer
  4. Successfully flashed vBios from 80.04.F5.00.07 (first backed up) to FE.ED.00.C0.DE (by nikey22) using Linux Live USB by xanderon
Problem description:
Immediately after step 3, the black screen persisted and I never got to see the login page. In fact, I don't even know if it actually got there since hitting the keys don't make any sound. Step 4 was really just me trying my luck. PRAM resets at this stage does nothing either. I have ensured that SIP is disabled again after every PRAM reset (yes I've learnt how to do this completely blind since recovery mode page isn't visible either). I can still hear the startup chime each time, and peeking at the diagnostic LEDs (with LCD plugged in), the first 3 light up, last one for LCD remains dark.

I'm kinda out of ideas at this point. I have included more information in my signature below.
 

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I like sharing news, but sharing wrong information will confuse the people later on. DCHP is activated and the only thing you have to do is waiting until the machines shows up on your internal router config page.

You can cross check your own Linux flash utility after flashing. Now the internal display will show you what happens on boot and if the LAN gets activated properly. You can even log in directly using the keyboard.
Sorry Ausdauersportler, but no-one said that DHCP is not activated by default. I am convinced DHCP will work on xanderons boot stick in most cases. But in my case DHCP boot automation doesn't work (maybe network setup or whatever). And I strongly believe there are others also getting stuck at this point for some reason. I found some hints here in that forum. I tried different USB sticks, iMac is always connected via ethernet and I never changed configs on xanderons boot stick. And of course, I waited plenty of minutes to give GRML more than sufficient time to boot completely (went out with the dog i.e.). Situation is still the same and I can proof this easily by looking at GRML on internal display and keeping an eye on router information, only coming up for GRML by using key strokes described. This is not meant to confuse somebody and I really appreciate this thread and all the good work and information, especially your work Ausdauersportler (I am following you for good reasons). I am just glad to help Kranny36. I don't need to get this information on page 1 or in xanderons post.
missing_IP_GRML.jpg
 
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One thing that could help many users is not use ssh and someone with skills to do an automated script:
- user puts the rom.bin in a folder on the boot linux drive
- boot the Linux and it'll do an automated script making a backup and flashing new bios.
- writes a log file and reboots.
- to prevent flashing twice it checks for the log file exists
 
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