Installed SP1 manually.
Passed Memtest86+ after 10 passes.
Few days ago, got another crash, like the picture above. Also crashed - with screen going black and computer restarting. All this while browsing (does it with Firefox, Comodo Dragon, or IE8) on khanacademy viewing math instructional videos. Guess the computer doesn't like algebra I!
NO BSOD's recently, just the other two kinds of crashes.
Unless anyone else has any other ideas on where the incompatibility/driver/whatever issues are coming from, I'm gonna call it quits on Win7 x64 and install XP Pro x86, despite loss of performance. But I like Win7 so pleeeease tell me what else I can do. Thanks!
BTW, no problems whatsoever on Linux Mint running on same machine, dual boot, different hdd.