I would probably either go into the bios and reset all to the baseline or clear the cmos (bios) by disconnecting power and moving the cmos clear jumper to clear and then back, then go into the bios and set the correct settings for some things like your memory (seems to often be an issue using spd), also do use ahci sata mode, and if your card has DVI slot, use it to connect your monitor.
Disconnect any drives other hard drives than your boot drive for Windows setup.
Also in your bios, go to advanced mode (upper right corner), then select the boot tab -- disable full screen logo, setup mode to advanced.
If you initially installed Windows in AHCI mode, you cannot just change the bios setting to IDE because the drivers will be incorrect, so that could be an issue.
Also run a memory test to check your memory