I have a p4 prescot 3.0 478 pin. It is running in a soyo dragon 2 board with a gig of ram. It has been running well for about a year or a little more. The other day I booted up and it said the cpu has changed. So I needed to go into the bios to change the frequency back to what it is supposed to be. Then I tried to save changes and exit and the whole computer froze. So I needed to do a hard reboot and when I did that it booted with no video this time. I tried rebooting several times and still no video. I checked the video card it is fine in another machine so is the monitor. The ram tested fine in another machine as well. If I go onto the mobo and take out the cmos battery wait and put it back in then the computer boots up with video and says again the cpu has changed. But in the bios it freezes again when you try to save. If I boot and bypass to try and get right into windows it freezes no matter if i boot normal or in any safe mode. I have no ideas left on why it will even boot when i take and replace the battery back in but then it freezes on me. If I boot after the freeze im back to booting with no video. Any help would be appreiciated.