Resolution changes after reboot

[Daxx]

Okay so, this has been going on for several weeks now. So, my normal resolution is 1650x1050 and mostly when I reboot it changes to some really low resolution, like 800x600.
This usually happens after I scan for viruses with Ad-Aware or when I update my graphic card drivers, dunno are those the reasons for this. I've been searching for information about this, but I haven't found any I'm running on Windows Vista Home Premium, I have nVidia GeForce 8500 GT and the latest drivers.

[Fabio]

Mine has also been recently changing by itself, but it has stopped now, don't know what causes it, I'm also on Vista Home Premium.

[Fuzzy]

I got a solution: Windows XP :razz:

[Daxx]

I got a solution: Windows XP :razz:

Won't happen
It started changing resolution again, when I added a new shortcut on my desktop -_-

[NeBizzenzuelleEne]

Or try Windows 7.

[Kessu]

First delete drivers, then install..