Computer locks up for no apparent reason after around 10 mins or so. I have taken out all cards, replaced memory. Imaged hard drive to another hard drive. replaced all other IDE devices (cdrom,dvdrom,etc) The only thing i can think of is that the chip is overheating? anybody have any ideas? i unfortunately do not have a chip to replace it.

I would say u have three posible suspects :) 1) Power Supply (That one happened to me I was going crazy, every half hour it would just reset, I guess it was old) 2) Motherboard (Hit Delete at boot and see temp could also be a lose connection to a number of things, like CPU and PCI cards) 3) CPU will only get worse but ask a buddy to borrow his sys to look 4 the prob Later ...

Also check to make sure the heatsink fan is running correctly.

Do you have a Soyo SY-K7VTA-B or Soyo SY-K7VTA motherboard? If you do, the processor voltage (Vcore) is too high. You are required to go into the BIOS, go to SOYO Combo Setup (or similar), under "CPU Vcore Select", change the setting from "Default" to "-0.025V", save the BIOS settings and exit the BIOS.

sounds more like a pc chips or ecs mobo to me..some boards have defective voltage regulators which don't regulate the current properly, causes lock-ups when the PC has booted into Windows.

I had one that would lock up after about ten minutes and nothing would work at all. Cntrl alt delete wouldnt work or nothing else. All I could do is restart it and it would do it again soon afterward. I done everything under the sun. Check the ram and for overheating and all. I went into bios and changed the speed of the processor setting in bios and she has not locked up since. The board was rated to run at what I had it set on but it would not without hanging. Under clocked it a little and she has run fine every since. That was a abit kt7a board running a 1.3 amd processor.

maybe the athlon 1300 was a 100mhz fsb and you set it to 133?