Hi, i just upgraded my system to windows 7 ultimate and increased my screen resolution to 1600 x 900 my monitors recommended resolution. Ever since i upgraded it, my computer will randomly shut down and when it starts back up I get the windwos has recovered from an unexpected shut down and when i click on view details this is what i see. Problem signature: Problem Event Name: BlueScreen OS Version: 6.1.7600.2.0.0.256.1 Locale ID: 1033 Additional information about the problem: BCCode: 3b BCP1: 00000000C0000005 BCP2: FFFFF88004909817 BCP3: FFFFF8800823E900 BCP4: 0000000000000000 OS Version: 6_1_7600 Service Pack: 0_0 Product: 256_1 Files that help describe the problem: C:\Windows\Minidump\122210-43352-01.dmp C:\Users\Chad\AppData\Local\Temp\WER-83741-0.sysdata.xml Also whenever i restart my computer my screen resolution drops back down to 1200 x 720. anyone have any ideas? I have an intel Q8200, 8 gigs or ram, and an ati HD 5770. The only thing i upgraded on this system was windows.