Background story: I purchased a Corsair 600T case, transferred all my hardware to the new case. A XFX780i motherboard, Intel Duo Core 3.06 E7600.
I triple checked all my connections before firing it. Came to life, all was good for about 4 days.
The case has a front panel for headphones and microphone and a fan controller.
I decided I need to do a skype phone call.. and why not use the front panel.
The moment I plugged the microphone in (a non powered, old school POS microphone)... lights out computer dead.
I have tried everything to get up and running. Went and bought a new PSU... I was thinking that maybe the 5v or 3v rail got knocked out by ESD.
Get a new PSU... plug it in... triple check... NOTHING. Checked the wall unit too, etc.
ALL I get is a blue LED light up on the MB and nothing past that.
Since this happened I have: uninstalled and reinstalled all hardware, cleared the CMOS via the jumper, reset the CPU and fan in place, the battery, memory, GPU... Nothing.
All I get is this blue led... no fans spin up ever.
So is it the CPU or the MB? Or Both?
Thanks in advance.
CPU hardly dies if you ask me. Most of the time it's the mobo. You can do a cross check by finding another lga775 board or another lga775 cpu and see if it runs normally with other parts of your system.