|Scandisk doesn't test the hard drive like a utility from the manufacturer would. That said, I don't think that is your problem anyway. |
You should test the memory using a utility designed to do that.
Memtest86 is one you can use. Get memtest at the link below. Burn a disk following the instructions and then boot to that disk to run the program. It may take some time to run a full test. You will need an unzipper utility.