Random lock ups

Archived from groups: microsoft.public.windowsxp.help_and_support (More info?)

My Computer locks up at random times, usually after starting an application,
and must be rebooted.
I've traced the problem to a single bit on my memory stick. since it's a 1GB
stick, I'd hate to throw it out because of one bad bit.
So my question is; is there any way to tell windows not to use that
particular byte, like loading in a dummy program there so widows already
thinks it is in use?
Any suggestions would be helpful.