My trusty dell dimension 4100 has recently been restarting without a blue screen of death or any other warning. So, I used my dell diagnostics diskette which boots to DOS. The RAM test failed at address 000004E0.

I have two RAM sticks, so I swapped them and ran the diagnostics again. The RAM test failed again at the same address!

What conclusions can be drawn from this?

Thanks,
Teffy