To be able to use my parallel port programmer I keep an old (by modern standards) machine running with Windows XP on it. It is an Abit KV-85 motherboard for AMD processors. In recent times I have had a couple of DIMMs fail on me. I am not sure if this is just coincidence, that I have had a couple of bad DIMMs, or if the motherboard is damaging the DIMMs. It uses a cheap generic PSU, I checked the PSU for voltage and ripple and it seemed OK, I also checked voltage and ripple on some of the power pins of the working DIMM, they seemed OK too (ripple about +/- 20mV), but other than that, are there any other things I should check? Thanks Rob