We have a Maingear gaming system that is hanging after login for 20 to 30 minutes. This doesn't happen in Safe Mode; however we have reinstalled Windows 7 from scratch 4 times and reconfigured the SSD back to RAID 1 (former problem had them in another config). Patriot RAM 12GB passes with flying colors with Memtest 86+. We are at our wits end - tried just about everything other than dropping it off a tall building. We've removed extraneous cards, disabled legacy USB in BIOS, all to no avail. About 1 in 10 times it boots up and stays clean. Otherwise, it's useless and can't be used (just a spinning blue windows symbol).
I thought it was hardware - not so sure now as Safe Mode seems stable.