PC won't power up properly !

Pushkar Pimple

Honorable
Apr 30, 2013
4
0
10,510
first of all specs
Mobo> ECS H61H2-MV V1.0
Pro>Intel pentium G2010
Ram> 2 GB DDR3 (1333Mhz) EVM
monitor> LG E2251VR
the problem is when i power on my pc
it's stays on for about 2 to 3 mins and after it power off and it automatically power up again this happens repeatedly also there is no display. there is no problem with SMPS (power supply) & RAM i have checked all the wires and components.
and i also removed cmos battery put it back in . i thought there will be prob wit On board graphics so i add a video card Asus EAH4350 but it didn't helped it starts and power offs again its been an only a month i brought the mobo and this started