Thanks much for the replies guys, i am extremely frustrated, have built many *many* computers, and only my own seem to do this. to follow up:
happened in two seperate cases?
Yes.
Two seperate power supplies, system boards, etc?
*everything* was changed, because i could not pinpoint the problem.
Quote--The only things left that would be common would be power, and vibrations. It would take some pretty good vibrations to take out multiple drives, so unless you are in an area with a lot of heavy construction, the only think I could see would be power.--
Nope. its resting on my clean floor under the desk. no fuzz, no carpet, sitting on a coarse rug with no fuzz or dust on it. Same spot with both towers, exactly the same.
Are any other electronics in your house affected?
None that i am aware of.
Any other componants in the system fail?
None.
Quote--Hard drives can be damaged by power, but unless you are consistantly running below normal level, I would expect to see other failures too. --
In the bios the variance is extremely slight, *maybe* give or take .15 to .20 above/under reccomended, and what does not make sense is it is the same in every outlet, well, at 8 of them, in the house. indicating that the switch box in this house is probably the origin of the powers shaky balence.
All western digital drives?
Yes.
All from the same source?
No. some from newegg, some from local stores
All new?
Yes. All wrapped and stickered from the factory.
Thanks again for the responses, will keep this updated