I built a new computer with the following components
MSI Z77A-G45 Motherboard
Intel Core i5 2400 CPU (this was bundled with the motherboard)
CoolerMaster eXtreme 500W PSU
Corsair Vengeance 16GB (4x4GB) RAM
EVGA Nvidia GeForce GTX 650 Ti Video Card
Western Digital Caviar Green 2TB HDD
Samsung 128GB SSD
Samsung DVD Burner
I assembled this and it worked great. Then, a month later, I came home to find the computer off. It puts itself to sleep after a while, but the LED on the power switch would still be lit and it was off. The PSU would not power up and the fan would not begins spinning. I tried all the usual troubleshooting.
I first checked the PSU. I disconnected the 24 pin power supply from the motherboard and jumped from the green cable to a ground. The power supply turned on, the LEDs on the case lit up and I could hear my drive spin up.
I disconnected everything from the motherboard, removed it from the case and set it on a non conductive surface. Then I tried to power it up with just the CPU and one stick of ram. Nothing. I have tried multiple different sticks.
I contacted MSI and returned my motherboard for a refurbished one. Nothing.
I contacted Intel and replaced the CPU. Nothing.
I know that the I received a new motherboard from MSI because it has a different serial number. I still have both boxes and the new board has a new serial number. I know that I have a new processor because I still have both of them.
I believe I have eliminated everything that could possibly be wrong. I am at my wits end. Please help.