My computer has been hanging up a lot on me recently, and I am trying to figure out wha the hell is wrong with it. A couple of days ago, Windows seems to have answered my prayers and returned one of its "solutions." It pretty much told me that something in my PC has gone south- and tells me to check these components:RAMMotherboardCPUPSU You'll need to know this about my PC- my PSU cracked and sparked like the Fourth of July when I tried to turn on my PC. I tried to turn it on a couple more times, only to get more sparks and singed silicon. So I sent it through the RMA process (along with my graphics card, whose fan was making a lot of noise.) Anyways, when I get my new stuff, Windows doesn't work. Long story short, after several NTFS reformats and Windows 7 reinstalls I still have the weirdest problems (winlogon not working, GPU driver not loading, Aero not loading, shortcut icons gone, f*ed up registry, etc.), and of course the freezes and BSODs. My question is this: how can I test what's going wrong? I am using a brand new Antec PSU, ran Windows Memory Diagnostic, Memtest86+ with perfect scores, and I just reflashed my BIOS. How can I test my MB and CPU separately without going online and buying the cheapest thing to pop into an LGA775 socket? I would love it if someone could find a diagnostic tool of some sort.