Screen blanking after upgrading to OSX10.9.2

After upgrading to OSX10.9.2 the monitor will randomlly go black. This never happend prior to upgrading to OSX10.9.2. Is there a permanant fix or a way I can go back to the previous version OF OSX?

Recover the backup you made before installing 10.9.2.
If you didn't backup, you should have.
https://discussions.apple.com/docs/DOC-1992

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See screen shot
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The startup disk may need repairing ...
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Computer HP Envy 17 Notebook PC - screen blank after bios Version F.53 update

Computer HP Envy 17 Notebook PC - screen blank after bios Version F.53 update
computer cannot enter BIOS but switches on and screen remains blank.
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Computer Starts but Screen Remains Blank (Windows 8)
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TwoPointOh
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

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Hello,
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So it's basically the same problem as the one you're having !
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Hi Experts,
We are getting blank Performance reports after upgrading to SCOM 2012 R2. Can anyone provide fix for this issue?
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Hi Karthick,
Here are two links for your reference regarding to the blank report issue:
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https://social.technet.microsoft.com/Forums/systemcenter/en-US/b1b13318-2de5-4940-82a2-a8ce5b832c11/scom-2012-performance-by-system-report-and-perform-by-utilization?forum=operationsmanagerreporting
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Regards, Yan Li

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Hi All.
My iphone 5s 32gb worked perfectly fine until upgraded to ios 7.1.
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Message was edited by:
teri chandler

Hello Shivani,
please do not request documentation via E-Mail. Try to share it i.e. in the SDN Wiki.
Regards
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Screen blank after Windows login

When I start my computer (Win 7 32 bit on a ThinkPad T60P), I am taken to the login screen and after logging in, my screen goes black. I can still see/move my cursor but the screen is black!
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I can use Ctrl-Alt-Del and go go task manager, etc - I've tried ending explorer.exe and reloading ... still nothing, still black with my mouse cursor.
Any recommendations, please??

'evening.
You may want to have a careful look at this write-up detailing the use of SFC (MS Windows System File Checker):
http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html
I've never had to use SFC, personally, so my knowledge is limited to what I've read of it, but it looks like it can be run in "verify-only" mode. Might be best to try that first to see if it reports anything. Then, you could consider taking a backup before letting the utility modify/fix anything.
Hope this helps a bit.
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How to downgrade kernel 3.10 - blank screen problem after upgrade

After a recent upgrade, which included kernel 3.10, my ASUS zenbook ux21a boots into a blank screen as reported in these topics:
https://bbs.archlinux.org/viewtopic.php?id=167411
https://bbs.archlinux.org/viewtopic.php?id=167463
https://bbs.archlinux.org/viewtopic.php?id=167518
How do I downgrade to kernel 3.9, please?
On this laptop I only have dual boot Arch and Win8 (but also a vacant partition). My grub timeout is set to 0 seconds because I almost never use windows, hence my problem is to get any control of the PC. I have attempted a fresh install from USB, but it takes me into exactly the same blank screen. I also attempted install of the older arch version, which went ok until post-installation reboot, following which I ended up with the same blank screen - probably because during the installation the new kernel 3.10 was downloaded.
I read in the above topics that people solved the problem by downgrading the kernel - somehow via chrooting from live arch usb. I lack knowledge on how to perform the kernel downgrade - perhaps someone can give instructions or at least tips how to get started.
Interestingly, the same kernel 3.10 upgrade did not cause problems on a very similar predecessor model ASUS us21e - this info may help the advanced guys to diagnose the source of the problem.
Last edited by latgarf (2013-08-04 21:18:04)

Thanks, andrekp, but it didn't work on my UX21A.
Here's what I did (screen stays black all throughout):
1. Boot the computer. I believe this takes me to login promt at tty1.
2. I login by blindly entering userid, <enter>, password, <enter>
3. speaker-test <enter> - I hear noise. Ctl+c to get out (noise stops).
4. Switch to tty2 by pressing ctl+alt+f2.
5. In tty2, I login by blindly entering userid, <enter>, password, <enter>; then speaker-test successful on tty2.
6. Switch back to tty1 by pressing ctl+alt+f1; speaker-test successful again on tty1.
7. Type startx. I assume that X and openbox are started successfully: I start lxterminal by pressing my custom short-cut keys combo that I specified in openbox's rc.xml; and speaker-test gives me audible noise from within lxterminal.
Again, screen stayed dark as night all the time, so the problem remains.
As my time allows, I try to come up to speed and follow/replicate the attempts to identify/resolve this problem made by more advanced guys in other topics:
https://bbs.archlinux.org/viewtopic.php?id=167411
https://bbs.archlinux.org/viewtopic.php?id=167463
https://bbs.archlinux.org/viewtopic.php?id=167518
https://bbs.archlinux.org/viewtopic.php?id=167314
The problem originally arose at # pacman -Syu, which included kernel upgrade from 3.9.9 to 10.3.3. After a later upgrade to 10.3.5, the problem remains. I've enabled 'testing' repositories on my other laptop, UX21E (which doesn't have this problem despite being the closest model!) - and I wait for the new 'testing' kernel to be released in arch, hoping to do a blind upgrade on UX21A and that it solves the problem. I also monitor https://www.kernel.org for when kernel 3.11 becomes available. If I manage to install kernel 3.11 even before it's released in arch-testing, maybe the problem will be gone...
In the mean time, I keep using the UX21A computer having installed Lubuntu on another partition (it has kernel 3.8).
Thanks again!

Screen blanking after upgrading to OSX10.9.2

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