Please help, my pc doesn't boot.

[CLAUE]

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

[Master Disaster]

Try a CMOS reset.

 

1) Disconnect the power from the wall or the PSU, physically unplug it at either end.

2) Remove the CMOS battery from the board.

3) Wait for a few minutes

4) Replace the battery

5) Replace the power

6) Try and boot.

[CLAUE]

36 minutes ago, Master Disaster said:

Try a CMOS reset.

 

1) Disconnect the power from the wall or the PSU, physically unplug it at either end.

2) Remove the CMOS battery from the board.

3) Wait for a few minutes

4) Replace the battery

5) Replace the power

6) Try and boot.

Tried that. No luck

[Victor ign]

Cheak if the CPU is fasented we'll

 And some mobo don't boot unless the CPU fan /aio is plunged in 

[CLAUE]

1 hour ago, Victor ign said:

Cheak if the CPU is fasented we'll

 And some mobo don't boot unless the CPU fan /aio is plunged in 

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

 

[Victor ign]

Maybe bent pins or a bad mobo?