Im building another PC with stuff I grabbed out of my stash, with AMD K6-2 400 cpu.
Anyway, the 4.3GB Quantum HDD does have some bad clusters but the weird thing is: when it attempts to read that sector the PC immediately powers down.
I found that out while using scandisk‘s repair function. How can that happen, sounds almost like physical intern damage that causes a short.

Not that I care about this particular HDD, I already installed another one. Actually the same model but without bad sectors.