h8-1200z System Type x64-based PC - I downloaded windows 10 and almost immediately got a critical failure report. I couldn't find a reason for it. I thought it was a junk alert because I had had no problems before. But in a few days my computer crashed, leaving black screen with only cursor. I did a system restore and reverted to Windows 7. It worked for a few days and crashed again this time getting only black screen and no cursor. I tried the CMOS battery fix and it worked for a few hours. Then went black again. I unplugged the machine overnight and now it's working again. Is my motherboard the problem? Was the whole windows 10 thing just a coincidence?