I installed KSensors....can't find the program.

[Nobody]

That's what I ment when I said that I think the problem is with the motherboard.  But since I haven't noticed anything go wrong after upgrading the processor, I'm assuming that everything's OK.

Are you sure that the MSI 6191 has any sensors? Their website does not indicate one way or the other that I could find. (http://global.msi.com.tw/index.php?func=proddesc&prod_no=348&maincat_no=1&cat2_no=&cat3_no=)

[Nobody]

wcs, thank you for your help, but I don't think anything can be done.

lagagnon, that was an excellent suggestion.  I went into bios and saw no way to see any temperatures from in there, so it makes sence that Windows or Linux can't detect them either.

It literally said that it couldn't detect any sensors.

Given that fact and the fact that WinXP software couldn't detect any either I'd say there is a 95% chance that mobo has no sensor chip, it is not working, or is so weird that it is not detected. I'd say you are out of luck. Most modern BIOSes have a diagnostic page that shows CPU temperature and PS voltages. I would get into your BIOS setup and see if it has such a page and if there is any data there.