Have you ran some memory tests? If different hard drives are having problems in the same machine, then it's not the hard drives.

There's really no easy way to check the motherboard, so if it was...

A friend's computer started having the STOP error about a month ago. She has 3 kids and a husband, and they all use the same comptuer. They download all kinds of stuff, and check email, and install...

Try this for the solutions:
http://www.techbuilder.org/views/showArticle.jhtml?articleId=189500921&pgno=1&queryText=

as for why it keeps happening, check the power connections, etc. Surges...

You know it is not the monitor because errors are being displayed on it. Try switching the SATA to another system; this will help you determine whether the Hard Drive is the problem or not.

If it...