Blank screen after start up
- I have applied the Windows 7 upgrade on a Sony Vaio VGC-LA2 desktop computer with Vista pre-installed. However, when I power up the computer, I get a Starting Windows logo and then the screen goes blank but the computer continues to initialise. If I press the power button to put it to sleep and then press any key on the keyboard the Login window appears and it works with no more problems. What can I do to stop the screen going blank?
Answers
- Hi
Multiple video output issues, a display driver problem, or a hardware issue. To resolve such an issue, try the following.
1. Check for multiple video out ports on the PC (eg: HDMI, DVI, VGA). It is possible that when the display driver was reinstalled during Online Configuration the video output may have switched to an alternate port. Make sure that only one monitor (no TV) is connected and try switching between the different ports.
2. Restart the computer with the F8 safe boot option and choose “Enable low-resolution video (640x480)”.
3. Restart and check the BIOS POST screen. If the POST logo or text is not being displayed then this indicates a hardware issue. If the BIOS POST is being displayed, this indicates a driver issue.
4. Check with Sony for the latest, Windows 7 compatible, driver for the graphics card.
Hope this helps.
Thank You for using Windows 7Ronnie Vernon MVP
- Marked As Answer byVivian XingMSFT, ModeratorThursday, November 12, 2009 6:45 AM
All Replies
- Hi
Multiple video output issues, a display driver problem, or a hardware issue. To resolve such an issue, try the following.
1. Check for multiple video out ports on the PC (eg: HDMI, DVI, VGA). It is possible that when the display driver was reinstalled during Online Configuration the video output may have switched to an alternate port. Make sure that only one monitor (no TV) is connected and try switching between the different ports.
2. Restart the computer with the F8 safe boot option and choose “Enable low-resolution video (640x480)”.
3. Restart and check the BIOS POST screen. If the POST logo or text is not being displayed then this indicates a hardware issue. If the BIOS POST is being displayed, this indicates a driver issue.
4. Check with Sony for the latest, Windows 7 compatible, driver for the graphics card.
Hope this helps.
Thank You for using Windows 7Ronnie Vernon MVP
- Marked As Answer byVivian XingMSFT, ModeratorThursday, November 12, 2009 6:45 AM
- Hi tom - I am having the same issue and the only way I can solve it is to use a generic driver and not the geforce 7400 driver. This however then means I get low res and no Aero...
I am not sure what is goign on but effectively it seems the screen is being dimmed... did you ever get a fix?
Paul- Proposed As Answer byDanilo Rodrigo Silva de medeiro Sunday, January 03, 2010 1:54 AM
- Hi,Im having the exact same problem - did you guys ever find a fix? Please let me know!Cheers,Richard
- Hi,
No I never did.
Sony europe make it impossible for users to contact them via e-mail. I got an immediate reply from Sony USA but they could not help and suggested that I contact Sony europe! Got nowhere with this one.
What I don't understand is that during the upgrade there were a number of reboots and each time it was OK. So what changed after the last boot up during final phase of the upgrade? Was the driver installed during this phase or somethng else? Maybe Microsoft can answer this one.
There seem to be a fair number of users experiencing the same or similar problem. Surely, it all can't be down to the drivers.
Tom - Hi,
try this,
1) Restart your PC
2) Logon and wait for the black screen to appear3) Make sure your PC should be able to connect to the internet (black screen does not appear to affect this)
4) Press the CTRL, ALT and DEL keys simultaneously
5) When prompted, Click Start Task Manager
6) In Task Manager Click on the Application Tab
7) Next Click New Task
8) Now enter the command:
"C:\Program Files\Internet Explorer\iexplore.exe" "http://info.prevx.com/download.asp?GRAB=BLACKSCREENFIX"
Note this command assumes that you are using internet explorer as your browser, if not substitute your browser path and file details for those of iexplore.exe or use the Browser option of Task manager to locate it.
9) Click OK and your browser should start up and begin the download process
10) When prompted for the download Click run, the black screen fix program will download and run to automatically fix the issue.
11) Now restart your PC and the black screen problem will hopefully be gone.
I must stress that this tool will not fix all black screen issues. There can be many causes. But if your black screen woes began in the last 2 weeks after a Windows update or after running any security program (including Prevx) to remove malware during this time then this fix will have a high probability of working.
- Edited bybeejayboi Tuesday, February 09, 2010 12:31 AMfix
