So I just got my old computer up and running. I haven't installed anything, except put files from my other computer on it so I can sell that one. Problem is, after two days of it working fine, it says windows 7 won't start. I have tried the system repair and the system restore, along with a memory diagnostics test (because it was saying the memory couldn't be read, but after the test was done it said there wasn't any problems) So I'm thinking it has something to do with the hard drive, maybe being internally damaged or something but I have no idea... I have left it turned off for a day and a half to see if that would work but it didn't. I still keep getting a blue screen about the memory that flashes for 5 secs then it starts up then restarts itself. So if anyone has any ideas or know of this problem and a solution please share, I would really like to get this fixed as soon as possible.