Posted 31 December 2012 - 05:40 AM
I have an E5400 in a Gigabyte GA-73PVMS2H w/ 4GB RAM, and it's been running fine for at least 6-12 months. Last night, I pulled it out to put in a new mobo, CPU and RAM, but had to abort due to a hardware problem. I put the original parts back in, and while the computer turns on, I get no video output, and no POST. I've already tried reseating the RAM and CPU and clearing the CMOS, and my power supply tester says it's good. I do notice that the power supply's fans turn on immediately when power is applied, and the CPU fan come on right after clearing the CMOS, but I don't think it does on subsequent power-ups. I'm also unable to shut it off by holding in the power button. I know it's not a short with the case, as the same thing happens if I power on with the mobo lifted out of the case. Any help would be greatly appreciated.