I have a Dell 4700. It runs xp with sp3. It has been running fine until yesterday. It locked up and when i tried to restart it, the case fan kicks into high gear (higher than i have ever heard it) and the computer wont boot(no display). The diagnostic lights on the back show that it should be a memory problem.( A & B are yellow) I have 4 sticks of ram (none are matching). Please don’t lecture, I now know they should match, but the computer has ran for the last 6+ months with them installed. I have no other pc to test the ram in. I have reset the cmos and tried each stick individually with same results. NO boot. I cant imagine all 4 went out at once. Am i on the right track or is the mobo toast? I don’t have a second power supply that matches and no volt meter. thanks in advance.
