Desktop PC switch on, but can't boot up

[hk7310]

Need guru help, thanks!

I have a desktop pc out of a sudden turn off, then cannot power up anymore. When switch on, no beep, no image, then monitor go to sleep mode.

Monitor is working. I change power supply, install an external graphic card, change processor, all of the above do not change a phenomenon, no beep sound, so PC can't boot up.

Could it be a motherboard dead?

 

[jtjt00]

List down all parts of your rig.

Have you reseat the ram?

 

[hk7310]

yes, change ram as well.

BiosStar 31M+ v.6.x mainboard
Intel core 2 duo e5700
Kingston 667 ram 1G x 2
WD hdd 500GB
dvd rom

 

[singupingu]

Remove everything except mobo and Cpu. Start put in one stuff at a time see if it boots. If no, then likely mobo caput since your com is ancient already.

Sent from Overpowered Phone Mark III using GAGT

 

[hk7310]

yes I did that, still the same. I did short CMOS jumper, waited for 10 sec than turn on. I did boot up once. Thereafter, totally dead.