PC won't power up

[sicpher]

Mobo: asrock h61m-hvs
cpu: i5-2400
PSU 500w
GPU: nvidia 430gt 2048mb
RAM: 8gb ddr3 1333

here is my analysis when i hit the power on button:

* power supply is down
* i notice the cpu fan makes a very slight turn, like 1/2cm turn
* all components are down except the LED of the chassis
* whenever i unplug the 12v PSU 4-pin connector, CPU and PSU fan works, except for the GPU fan

this happened the first time I assemble the components together, then i did an accidental and unexplained miracle that made it turn on. The problem returned few days later.

I am not sure which to RMA, I need some wise help, thanks.

 

[UndeadDragon]

Is the motherboard fully powered by the power supply? I.e no loose cables

 

[sicpher]

yeah the 24 pin and 4 pin power supply are securely plugged in, that's the problem

 

[sqrage]

Do you have any extra components (sound card, optical drive etc)? How many hard drives?

PSU seems kind of low. What brand/model is it?

 

[sicpher]

just 1 hdd 7200rpm 1tb seagate. no soundcard and optical drive. i don't think it's the watt of power supply because it wont boot with just cpu, mobo and ram. any ideas?

also i noticed with bare mobo and power supply(24 and 4 pins connected), it still won't boot.

 

[Slapshot136]

have you tried taking it out of the case and removing the fans (to check for a short somewhere)? I would do that, and contact asus since they would know what to check next/RMA

 

[beacher]

I think you can check your RAM,use your eraser get wiped.Then it maybe OK.

 

[MrBrooks]

Reset the RTC/NVRAM/CMOS RAM. Basically whatever you want to call it. Leave it out for 20 mins and it should clear everything and allow you to boot the PC.