PC crashed, now it won't boot

[reakt]

hey guys. i was working away happily on my pc last night when it suddenly switched off. when i turned it on again the fans power up but nothing appears on the screen, not even the initial self test. so this morning i tried unplugging all the drives, pci cards etc with still the same result. i have 2 separate ram sticks, so i swapped both of those out as well, but no matter what it just won't boot. is my mobo dead or what? thanks!

btw it's an asus P5S800-VM motherboard which i bought about 3 years ago along with an intel pentium 4 processor

[best4less]

Have you got another power supply to try
But it sure looks like your processor or mother board

[hoe]

try changing the power supply....

also check the motherboard for scorch marks, in case it has fried itself....


too slow......

[Philquad]

powers up
onboard graphics? try a vga card.
find cmos jumper or pull battery out for 10 minutes, might just be screwed bios

[reakt]

ok first things i will try are the cmos jumpers and battery.

i was running a graphics card but unplugged it this morning incase it was causing an issue and tried using the onboard graphics - neither made any difference.

hopefully tonight i can borrow my gf's power supply and give that a go.

thanks for the quick replies!

[Philquad]

yes if not cmos probly moby
hardest to test as everything else relies on it

[navy blue]

like everyon is saying, looks like a mobo issue

[z80]

sounds like the capacitors around the cpu chip are the leaky types,

betcha they have brown stains on top and are bulging.

[Decapper]

Nose is also a good tester in my experience

[reakt]

i replaced the motherboard and all is working fine again.

i will have to have a look at the old one tonight and see if those capacitors are bulging. can they be fixed/replaced for less than $62 (the price of the new mobo)?

[mandc]

i will have to have a look at the old one tonight and see if those capacitors are bulging. can they be fixed/replaced for less than $62 (the price of the new mobo)?

You probably could if you did it yourself but it's hardly worth the effort.
When mine went, pretty well all the caps would have needed replacement....it's just not worth the hassle

[z80]

I have done a few now.

I use a professional desoldering station and it still needs a lot of heat to remove because of the voltage planes in the internal layers of the board acting as a huge heatsink.

the plated through holes are easily damaged as well.


Good luck....