I have a build working for month and half
Woke up this morning and the computer turns on the immediately turns off and continues to do so
I tried different ram
I used a jumper for the power supply and it runs everything else without shutting off
The CPU cooling isn't an issue the pump on my water cooling is working perfect
Is this my mobo?
I suspect either the mobo or PSU at this point. I recommend you remove all devices (SATA/IDE, etc) and all but 1 stick of memory. See if the system will boot and let you into the BIOS. If successful, start reconnecting devices (start with your boot drive) to verify that the problem isn't a particular device "shorting" the system.