ok ill try to answer your questions.

1 pick a program you like to use and do the 3 pass wipe. That is the DOD standard one usualy. It will take an hour at least to do this and even longer on larger drives. The 200gb or larger drives I do before I go to bed I just set it to run and its done in the AM.

2 If your reselling the drives the waranty wont be good anyway. Generaly I dont sell drives with missing screws because this open the inside of the drive to dust.

3 Only way to test a video card that I know of is to plug it in and run testing software. For selling on ebay I just plug them into my test bench systems I have set up and if it powers up and screen comes on I call it good. Be warned that this isnt the end all test and if your selling some gaming type cards they may fail under stress testing. You may get returns if this happens. There are some programs out there for strss testing video cards as well.

I test ram the same way. Plug it in run test software on it. Or you can buy a ram tester but they run about 3000 to 5000 bucks.



Hope that helps.