the problem is windows keep coming up this program has performed an illegal operation and will shut down, if the problem persists contact the vendor for know reason.
Which program ?
Sounds like you've got a bug......try using SFC (System File Checker)
Does it in the same program, or is just everything??
go to your start button and search for System File Checker in the Help section, and it will scan all the OS files as you prescribe. Be sure to look at the advanced settings for a more accurate report.