As I stated before, where I’m not sure. I was having trouble with the PC not allowing me to save stuff in word. I’m getting all kinds or error messages including stop error messages. I was also having trouble with the PC turning off and restarting itself. If finally turned off and it would not turn on. It sat for a few days dormant until I could mess with it. The next time I went to start it up, it fired right up. We did a bunch of diagnostic checks starting with the power supply. I put a new power supply in it and it was running the same. It would not start unless you unplugged it and took out the CMOS battery and put it back in. We did all this with and with out the hard drive in. As a last ditch effort we updated the BIOS. It seems to start up and stay started. I can turn it on and off with no trouble. How ever I am still getting a lot of stop errors of all sorts. One being “Beginning memory dump. After all the diagnostic checking it was determined I have a mechanical problem. We narrowed it down to the CPU or the motherboard. Any other thoughts on this. The fact that it is now starting makes me wonder if it is a soft ware problem not the motherboard or CPU. My next step was to reinstall the OS. I have noticed that when I go to SKYPE it throws the PC into a stop error message before I order a mother board nad then possibly a CPU. Any thought or comments would be great. I am running XP media center. Model: Gateway 835GM I found this on another post and it states the problem better than I did. All this was done to my PC Unplug all external devices (leaving Keyboard; Video or Power connected only) Remove any addon internal PCI card (ie Modems; Sound Cards; Video Adaptors) Confirm all internal Power and Data plugs are secure Reset the CMOS, using the onboard jumper (service manual required fo location) Remove all internal dust and debri Confirm all Fans are operational (especially CPU) Do you think its the motherboad not the software.