powers on but no display, boot, beeps

[nfsworldrace]

i have this pc about 7 yrs. it powers on but no disp. boot beeps, but the fans, hdd, dvd rom works.

my psu is not branded btw. 540w, and the prob occured when i smelled something burned or toased. i just cant tell surelly.

note: i have no vcard, also tried reseating cmos. checked the cpu hsf normal temp

 

[TVeblen]

As you know, something burned out (literally).
The most likely suspects are the power supply and the motherboard (a component on the motherboard).
If you can borrow a compatible power supply from someone you can hook it up to test.

If it is not the power supply then you are most likely looking at a new motherboard. And since this is 7 years old there is a good chance you will not find a new replacement.
It could be time for a new (or new used) system.

 

[nfsworldrace]

i found a shops where i can replace the components. so i should bring it to them.

btw my pc specs are
pentium d 920 3.0 ghz
512mb 533mhz ddr2 ram
via p4m800p... mobo
generic psu 540watts
80gb seagate baracuda 7200rpm sata 2

 

[Britton30]

Along with TVeblen's ideas, also check your monitor on another PC to test it. If you have only onboard video I also suspect the board is bad. Look very closely for anything that looks burned or bare copper traces.