Dear all,
Two days ago I updated my iMac 27" (mid 2011) from OS X 10.8.5 Mountain Lion to 10.10 Yosemite.
Clean installation was done via USB, 3 user created one admin and 2 standard users (all with the option increase contrast option on). The following software installed:
After one day I had the first strange reboot, but than it seemed working fine.
Today while using it, something strange happened: the image on the screen "shifted" 5cm to the left, meaning that the 5cm on the left of the screen were moved to the right and than everything freezed. With a power off I rebooted.
Thinking the issue was related to the screen I uninstalled and removed Spyder4Elite.
I rebooted and it was working fine.
After a while, the screen went almost completely blank, I could see the very top first 3/4 pixels and recognize the top bar. Nothing. After a while I forced a reboot.
I tried to reboot, but the same appears. I turned it off for a bit.
Turinig it on again the following happened:
Then turned everything off and disconnected the plug as well. After turning on again now everything starts directly at point #7 into an infinite loop.
I tried to start and hold "D" key for the diagnostic tools. Nothing happens boot and whitescreen.
If I hold the option key I can select the boot options, choosing Recovery 10.10.1, white screen appears and than reboot again.
The only thing I have, is the USB key with Yosemite on it.
Fortunately on the external HD I still have the "Install OS X Mountain Lion.app": is there a way to create a bootable USB key of Mountain Lion using windows?
Thank you for your kind support,
blp
ps: ah.. Apple care obviously expired in August...
PDC
Two days ago I updated my iMac 27" (mid 2011) from OS X 10.8.5 Mountain Lion to 10.10 Yosemite.
Clean installation was done via USB, 3 user created one admin and 2 standard users (all with the option increase contrast option on). The following software installed:
- Adobe Lightroom 5.7
- Datacolor Spyder4Elite 4.5.8 (monitor calibration)
- Microsoft Office 2011
- PlayOnMac 4.2.5
- iMovie 2.1.1
- VLC 2.1.5
- Google Chrome
After one day I had the first strange reboot, but than it seemed working fine.
Today while using it, something strange happened: the image on the screen "shifted" 5cm to the left, meaning that the 5cm on the left of the screen were moved to the right and than everything freezed. With a power off I rebooted.
Thinking the issue was related to the screen I uninstalled and removed Spyder4Elite.
I rebooted and it was working fine.
After a while, the screen went almost completely blank, I could see the very top first 3/4 pixels and recognize the top bar. Nothing. After a while I forced a reboot.
I tried to reboot, but the same appears. I turned it off for a bit.
Turinig it on again the following happened:
- Boot screen
- White screen flickering black
- Black screen
- White screen
- Reboot
- White screen stating the the computer restarted after an error
- Boot screen with pink vertical lines (1.png)
- White screen (2.png)
- Black screen
- Reboot
- Start again at #7
Then turned everything off and disconnected the plug as well. After turning on again now everything starts directly at point #7 into an infinite loop.
I tried to start and hold "D" key for the diagnostic tools. Nothing happens boot and whitescreen.
If I hold the option key I can select the boot options, choosing Recovery 10.10.1, white screen appears and than reboot again.
- Does anyone know what happened?
- Does anyone else had a similar issue?
- Is there a way to run diagnostic tool to check hardware failures?
- Is there a way to browse the HD content to save a file?
- Any other suggestions or ideas?
The only thing I have, is the USB key with Yosemite on it.
Fortunately on the external HD I still have the "Install OS X Mountain Lion.app": is there a way to create a bootable USB key of Mountain Lion using windows?
Thank you for your kind support,
blp
ps: ah.. Apple care obviously expired in August...
PDC
