I have a custom built computer with an SSD and two other HDs. It has been running great (Windows 7) for months now, but recently it has just randomly started crashing (blue screen) every couple hours or so. When is starts back up at the BIOS it can't find the SSD (boot volume) and then goes and stalls at "Loading Operating System...". If I restart the computer it boots up fine, but the it crashes a couple hours later again. What should I do?