can t change monitor driver

I have installed Vista Beta 2 x64 on my HP desktop and a Gefore 7900GT is sending the graphics to a CRT monitor. However, the picture keeps flashing like the monitor goes blank for a 100-500ms at a time at random intervals every 1-30 seconds. Most annoying, so I thought I'd try changing the monitor from "default monitor" to the correct one. But...I'can't! The Properties button in Advanced Display Settings->Monitor is grayed out and the monitor does not appear in the Device Manager.
Any advice on how I change monitor driver? (Or even better, how to get rid of the monitor flashing off all the time.)
Thanks!

If its greyed it might be as a result of UAC, try disabling, and try fixing the monitor display again. To disable UAC, Click Start > All Programs > Accessories > Run > type in MSCONFIG > OK > Tools (tab) > scroll down > select "Disable UAC" > Launch > close command prompt, restart your system for the changes to take effect. -- -- Andre Windows Connected | http://www.windowsconnected.com Extended64 | http://www.extended64.com Blog | http://www.extended64.com/blogs/andre http://spaces.msn.com/members/adacosta
"RuneH" wrote in message

I have installed Vista Beta 2 x64 on my HP desktop and a Gefore 7900GT is sending the graphics to a CRT monitor. However, the picture keeps flashing like the monitor goes blank for a 100-500ms at a time at random intervals every 1-30 seconds. Most annoying, so I thought I'd try changing the monitor from "default monitor" to the correct one. But...I'can't! The Properties button in Advanced Display Settings->Monitor is grayed out and the monitor does not appear in the Device Manager.
Any advice on how I change monitor driver? (Or even better, how to get rid of the monitor flashing off all the time.)
Thanks!

Thank you for the suggestion. I have now disabled UAP (User Account Protection) which I hope is what you suggested, but I still cannot click Properties for the monitor as it is grayed out. I can click Properties for the Adapter just fine.
One other thing is the Troubleshoot tab which says "Your currect display driver does not allow changes to be made to hardware acceleration settings" (I am using Latest Nvidia 88.61 drivers).
Why there is no "Monitors" entry in the Device Manager also seems strange to me.
Any more suggestions I can try?
Thanks,
Rune
"Andre Da Costa [Extended64]" wrote:

If its greyed it might be as a result of UAC, try disabling, and try fixing the monitor display again. To disable UAC, Click Start > All Programs Accessories > Run > type in MSCONFIG > OK > Tools (tab) > scroll down select "Disable UAC" > Launch > close command prompt, restart your system for the changes to take effect. -- -- Andre Windows Connected | http://www.windowsconnected.com Extended64 | http://www.extended64.com Blog | http://www.extended64.com/blogs/andre http://spaces.msn.com/members/adacosta
"RuneH" wrote in message I have installed Vista Beta 2 x64 on my HP desktop and a Gefore 7900GT is sending the graphics to a CRT monitor. However, the picture keeps flashing like the monitor goes blank for a 100-500ms at a time at random intervals every 1-30 seconds. Most annoying, so I thought I'd try changing the monitor from "default monitor" to the correct one. But...I'can't! The Properties button in Advanced Display Settings->Monitor is grayed out and the monitor does not appear in the Device Manager.
Any advice on how I change monitor driver? (Or even better, how to get rid of the monitor flashing off all the time.)
Thanks!

If I in device manager click "scan for hardware changes" I can for 30 seconds see a monitor in the list and change the driver.
However, it didn't help with the flickering. Now I have connected a different CRT monitor which also flickers. This monitor did not flicker when connected to a different box running Vista (Matrox graphics adapter). So I'm thinking it is the Nvidia drivers for my 7900GT card. Shazbot!
/Rune
"RuneH" wrote:

Thank you for the suggestion. I have now disabled UAP (User Account Protection) which I hope is what you suggested, but I still cannot click Properties for the monitor as it is grayed out. I can click Properties for the Adapter just fine.
One other thing is the Troubleshoot tab which says "Your currect display driver does not allow changes to be made to hardware acceleration settings" (I am using Latest Nvidia 88.61 drivers).
Why there is no "Monitors" entry in the Device Manager also seems strange to me.
Any more suggestions I can try?
Thanks,
Rune
"Andre Da Costa [Extended64]" wrote:
If its greyed it might be as a result of UAC, try disabling, and try fixing the monitor display again. To disable UAC, Click Start > All Programs Accessories > Run > type in MSCONFIG > OK > Tools (tab) > scroll down select "Disable UAC" > Launch > close command prompt, restart your system for the changes to take effect. -- -- Andre Windows Connected | http://www.windowsconnected.com Extended64 | http://www.extended64.com Blog | http://www.extended64.com/blogs/andre http://spaces.msn.com/members/adacosta
"RuneH" wrote in message I have installed Vista Beta 2 x64 on my HP desktop and a Gefore 7900GT is sending the graphics to a CRT monitor. However, the picture keeps flashing like the monitor goes blank for a 100-500ms at a time at random intervals every 1-30 seconds. Most annoying, so I thought I'd try changing the monitor from "default monitor" to the correct one. But...I'can't! The Properties button in Advanced Display Settings->Monitor is grayed out and the monitor does not appear in the Device Manager.
Any advice on how I change monitor driver? (Or even better, how to get rid of the monitor flashing off all the time.)
Thanks!