CLAUE

I rechecked and tried with a different cpu. Still the same

Tried that. No luck

My pc is not booting. The LED on the mobo lights up and when I press power button, it just does not TURN ON! The PSU clicks one time and nothing after that. No fans spinning or anything. After a hard reset, the PSU clicks again,. Tried with new PSU. No result Tried different ram and gpu, no result. An led was always lit no matter what. It had SB_PWR written as it's name(I referred to the manual. It just states that 'when the led is lit, the motherboard has power) Once I accidentally forgot to plug the 4pin CPU power cable(the one on the top left) and the fans spin . When I plug in the 4pin EPS, the PSU clicks and then nothing. Can't afford new system. Please help me Specs CPU: lntel Pentium e5700 @3.1ghz mga 775 CPU Ram: 6(4+2) gb simmtronics ram (2 gb @800mhz and 4gb @1333mhz) GPU : asus gt 710 gb passively cooled mobo: asus p5-g41t m-lx g41 chipset hdd : 500gb wd green. no ssd psu. Some crappy 500w peak smps. Old one I don't know. No names not the best work of cable management. Working with what I got

The led that was lit had SB_PWR written on top of it

There was no burning smell and I was using this pc for almost 7 years with some minor HDD failures and CPU upgrade from Intel Pentium e2140 to pentium e5700

I even tried changing the PSU to brand new one and it still doesn't work

My pc is not booting. The LED on the mobile lights up and when I turn it on, it just does not TURN ON. Once I accidentally forgot to plug the 4pin CPU power cable(the one on the top left) and the fans spin . Please help me Specs CPU: lntel Pentium e5700 @3.1ghz mga 775 CPU Ram: 6(4+2) gb simmtronics ram (2 gb @800mhz and 4gb @1333mhz) GPU : asus gt 710 gb passively cooled mobo: asus p5-g41t m-lx g41 chipset hdd : 500gb wd green no ssd psu. iBall 500w peak smps. Old one I don't know. No names