Hello, i just installed an intel 520 ssd in my pc set my bios to AHCI mode well has been working perfectly, but lately when i turn on my pc it shuts itself down for about 1 second then boots up again fine, loads windows 7 in about 11 seconds and i play battlefield 3 all night this only happens when i boot can anyone tell me why?
Do you have a mechanical (spinner) drive? Check your BIOS. You probably have the mechanical drive (or perhaps the DVD drive) set as your primary boot location. Your PC is looking for an OS there, not finding it, then moving to the second priority boot drive where your OS is loaded.
At least, that's my suspicion. Check your BIOS boot order. Your SSD needs to be first.