|If the drive is not making any clicking noises and it is running in DMA chances are the drive is OK. If you want to test it anyway as there is no harm in doing so, then download SIW.exe. |
SIW should yield the drive manufacturer, or at least the full model number, which you can then Google to find the manufacturer.
Memtest 86 will either pass the RAM or indicate errors. No errors are acceptable.
Sometimes RAM concacts can get oxidized. Try snapping each module in and out 4 or 5 times to scuff up the contacts.
Be sure to have the computer unplugged, or if there is an OFF switch on the power supply, use that. Also exercise proper anti-static precautions when mucking around inside the case. (ground yourself first)
Download and run Ccleaner Slim to cleanup your system. Get it at the link below.