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UAC makes screen flicker?

D

DarkManX4lf

Senior member
In Vista, every time the User Access Control prompts me to allow or "ok" something my screen flickers right before the prompt. It doesnt do that on my laptop. How do I stop this?
 
I have not seen this since back in the beta when using earlier drivers. Updating your video drivers might do the trick.
 
The 9800 Pro is getting pretty long in the tooth for Vista. Consider an upgrade.
 
Originally posted by: corkyg
The 9800 Pro is getting pretty long in the tooth for Vista. Consider an upgrade.
Click to expand...

Not at all, it's perfectly fine. As Smilin mentioned it has something to do with the video drivers. My X800 GT flickers with UAC but for some reason a X1300 in a Dell doesn't. Go figure.
 
I didn't mention this before because I really don't recommend it but the choice is yours.

Under your security policy, Local Policies, Security Options..
Set "User Account Control: Switch to the secure desktop when prompting" to disabled.

It should clear up the issue.


The reason I don't recommend it is because it opens a potential attack vector by allowing an app running in your session to spoof an "ok" into UAC. The secure desktop that is normally enabled is the same sort of thing that Winlogon uses when you hit Ctrl-Alt-Del. It completely prevents an app from queueing up a pre-canned response to a UAC prompt then triggering one.

I'm pretty sure the flicker issue is a Video driver issue. You should pursue this as a fix rather than using the security policy change as a mere workaround (especially since it reduces security).
 
My computer does this with nvidia's drivers as well.

The drivers that came with windows don't have this issue.
 
I'm actually using the driver that comes with windows...

I tried to install the drivers from AMD/ATi, I think it was Catalyst 7.4 and after the installation I would get error messages saying that the driver was not installed properly or something like that...
 
Originally posted by: DarkManX4lf
I'm actually using the driver that comes with windows...

I tried to install the drivers from AMD/ATi, I think it was Catalyst 7.4 and after the installation I would get error messages saying that the driver was not installed properly or something like that...
Click to expand...

mmm, probably means what it says.

Try a full uninstall of the current drivers, then check the readme before installing again. There may be some tricky details or known issues in the proces.
 
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