Windows 7 Hangs when asking for Admin Priviledges

[LingLing]

I have an annoying issue and it only happens about half the time my computer is turned on.

When I run a program in "admin mode", the screen goes black and hangs for about 5 seconds, the prompt comes up asking me to approve, I click yes, screen goes black for another 5 seconds then the program comes up. This also happens sometimes when I wake the computer from the screensaver. I also happens when I try to open task manager. With the specs of my computer, there's no reason this should be happening. The computer is only 2 months old.

I have run CHKDSK, did sfc /scannow, all are supposedly clean now. I checked my registry for errors, repaired those. Ran an AVG scan, also clean. My graphics drivers are up to date. All of my other drivers should be up to date as well. If I go into the device manager, there are no dreaded "!" icons next to any devices.

Any insight or help with this issue would be really helpful. It's a really annoying issue and I just want my computer to run like it should be.

[-pops-]

At the prompt to approve do you get a message "change when these notifications appear"?

If so, click on that and change the setting on the window which appears.

If not, I've misunderstood the question.

[geyu]

I did not understand you repaired registry errors.Do not edit Registry. Its meant only advanced users. Any incorrect change to registry can cause your computer to stop working normally.

Start your computer in safe mode and try a system restore.

Disable your existing anti virus and UAC for troubleshooting purposes.

Restart and let me know the results.

For help on how to start your computer in safe mode refer http://intelligentcomputingtips.blogspot.com/2011/04/windows-7-recovering-from-crash.html

[anilkamble]

it takes some time it is useful to use antivirus like norton paid version.