hello every one, i have just built a new system, the first few times i booted my Asus motherboard told me there were power surges. i was a little worried, but after further research i discovered Asus support recommends to just shut it off. so no worrys there, installed xp and all drivers. Used the computer for a good 2 days, Played a decent amount of GTA4. it was running great. so i decided to try windows 7 out on it, after installing the VGA driver it would give me a BSOD at login every time. after more research, an apparent known problem (but not normally on boot) with that driver. after all this, i decided to ditch windows 7, stick with xp. And this is where my problems started.it would just restart when i tryed booting xp, so i ended up just reinstalling windows xp on it. it worked fine untill, i try loading gta, it would restart... problem got worse after reinstalling windows again (thought maybe the drivers got messed up or something, cuz i couldnt get it out of 16bit mode, with dirvers) now it reboots when i go to the asus page to try to upgrade drivers, or when i try opening a picture... not wanting to deal with at the time being, i made it dual boot with Ubuntu. what also worked great at first. untill i installed the GPU driver for it.... after restarting, open the Nvida control panel thing, display goes all crazy, turns into patterns.. this is when i stiped using this computer. i dont want to break it.. its all brands new. I'm worried it may be the PSU because of the MB telling me it was surging. when i check the volts in the bios, they seem to be pretty unsteady, but staying close to the +/- 5%. other times i checked it was stable as could be. im worried it may be the GPU because of the restarting when opening GTA4, and having problems on 3 OS's after driver install. i just find it weird it worked fine before installing windows 7. A friend told me to check the ram, i will be doing a memtest tonight. a few more notes: i know its not over heating, good airflow, wire-management. A positive case pressure (3in:2out), good Cpu cooler, cold room temp. the power supply seems to be of low quality but, heres a link to the PSU: http://www.xoxide.com/logisys-550w-pcix-clear.html GPU:http://usa.asus.com/product.aspx?P_ID=o7FrMH9W00nDL1Ml MB:http://usa.asus.com/product.aspx?P_ID=ef0qgvMIwOUagAVl And ram:http://www.newegg.com/Product/Product.aspx?Item=N82E16820231098 if u need any other stats/pics/whatever please ask. Any and all help will be appreciated.