[GTALUG] computer hardware testing tools.

Hi folks, What I am seeking is an open source program that tests aspects of say your motherboard. that the serial ports or parallel ports work, that the USB ports are sound etc. I am asking because due to an as of yet not fixed hydro problem in my new apartment, the occasional power surges, even with machines attached to protectors, are causing slight damage to hardware. Need to know how much as I only have so many computers I can use. Any program ideas? Will be sharing suggestions with someone hopefully helping me troubleshoot. Thanks, Karen