I expect the answer to this is that I'll have to install Windows again, but I wanted to make sure before I open the disk case and waste $80. Details: -Gets to the loading windows screen and crashes just before the four colored balls make contact. The screen freezes for about a tenth of a second before restarting, but I don't get a BSOD. -Original install was OEM -CPU, GPU, and motherboard were all changed. Also added a 1 TB HDD, but everything else is the same. -I scratched the top of my board during installation. The only effect seemed to be blocking CPU temp readings, and memtest+ fixed that for some reason. board is now MSI 970a-g46 from FOXCONN 2a92 CPU is FX-8320 from Phenom II X4 965 GPU is R9 270 from HD 6850 I've tried: -Loading from system image and reformatting to factory settings before booting -Running startup repair, which found errors once but didn't change anything -Running memtest+ and windows' memory test, both with no errors Can anyone confirm that I need to install Windows from a new disk to fix this? I'm completely open to running more tests if there's any chance it's a hardware issue.