RAM not working/ NO Display out

[Just a random guy]

Built a new PC last December, never had a problem.
Then yesterday, when I pressed power, the computer would turn on/off by itself repeatedly every 3 or so seconds.
I removed the RAM in slot 4 (leaving only 1 4gb in slot 2) and the computer worked. I replaced the CMOS battery and reset the BIOS using the jumper.
After this, with ram in slot 1 or 2, the computer turns on/off again every 3 seconds, with ram in 3 or 4, the computer works fine, just with no display.
So basically, I cannot even get into the BIOS or do anything since no combination of anything will give me a display or allow the computer to POST.
I assume its a problem with the mobo, but what would cause it to go bad over night?

It's a msi gaming 5, with 2x4gb g skillz, and a intel i5 4690k
NOT overclocked, all factory settings.

 

[alexoiu]

Motherboard, CPU, or RAM. What you can try is re-seating the CPU, checking the socket for bent pins, reinstalling the CPU and CPU cooler (make sure that you're not over-tightening it) and testing again.

 

[Just a random guy]

Tried re-seating twice, and tried to boot without the cooler installed so there was no pressure on the cpu.
There's no bent pins and no blown capacitors.
I'm at a loss, going to take it to someone who knows more about it than I.

 

[alexoiu]

Please post back the result.

 

[Just a random guy]

Please post back the result.

It was a combination of a fried cpu and bad ram. What caused it to go bad overnight? I have no idea. But a new CPU and new RAM solved the no POST and spontaneous restarting issues.

 

[Just a random guy]

Bad ram and a bad cpu

 

[alexoiu]

thank you for the update.