Is my motherboard fried!!!!!

[humbug0_2]

Hi there
Thought i would do a clean up inside my pc yesterday and think i managed to damage something.
I have a fan which sits on top of the processor chip which i removed for cleaning due to the amount of dust within pc.
My old pc had something similar but just had 4 screws you tookout (much easier) than this one!
This fan had 4 plastic screw type things that when you push down they go thru 4 small holes within motherboard.
Problem was getting it out was no problem but getting to push these plastic screw back things in after was a nightmare!
I think i have either cracked the motherboard somewhere(but can't see no signs of damage)whilst pushing down on the screws or i think i may have scrarched the circuit board whilst pushing with a small screw driver!

Is it possible to do this?

Once i put pc all back together it boots up fine all fans still working but keyboard(old style connection not usb),and all 6 usb ports now not working!

Have tried usb mouse and other devices in laptop and all works fine even keyboard!

Only thing that seems to possibly work is ethernet cable as green led light comes on when you put it into the port.

Also have no picture on screen just black!

I have seperate video card in motherboard slot and think it could be ok as if i take out DVI cable it comes up on my monitor as DVI cable unplugged please check...

So basically can't see nothing on screen to see what Windows says etc and no response from anything plugged into any motherboard slots usb etc.

2 usb's are on front of pc and are not working either.

Would these be connected to motherboard also?

Sorry for all the questions but don't know what to do next!

Many thanks for all advice given.

[Mickha]

If you have nothing on the screen why do you think the PC is booting up as normal?
Most fans now use the plastic push down option rather than the older screws system, and are quite easy, once you get used to them.
Are you seeing anything on your monitor on boot up?
First try removing your graphics card and try the motherboard graphics port, if it has one.

Personally I would take the PC apart, completely, including removing the motherboard from the PC, and re-build it.
Start with just the basics, Processor/fan, one stick of memory, and the power connectors, then try booting up, if you don't get the boot up screen then you could be right it's either the motherboad, CPU or memory, then you have to test them to check which.

[br222]

if its a old cpu it sounds like you have chipped the cpu whilst forcing the fan screws back in as on old cpus they did not have the metal heatsink plate attached just the bare chip

[cable man]

He will not of chipped the cpu, It sounds like your video card is fooked take it out and use the 1 on the motherboard 2 see if you get a picture ?? or if you have or can get your hands on a a friends video card 2 try it in yours...

[unadkat]

2 usb's are on front of pc and are not working either.

Would these be connected to motherboard also?

Just to add the front USB's are not connected to the motherboard, you would need to connect them to the motherboard in order for them to work.

Inside your case you should have possibly 1 or 2 wires which says ''USB'' on them. Connect those to where it says on the mobo '' USB''

If they are not connected then this is why they dont work !!!!

[jet]

When you removed cpu fan did the metal heatsink come off with it? im just wondering if you may have pulled the cpu out of its socket a little.

[ratcatcher]

no way the guy has gone missing be nice if ppl could say thanx to ppl that help bit of common courtesy costs nowt and makes you feel great lol

[humbug0_2]

Originally Posted by jet

When you removed cpu fan did the metal heatsink come off with it? im just wondering if you may have pulled the cpu out of its socket a little.

How do i know if i have?
Would this stop usb ports working?
Just to say thanks for everyone elses help so far.
Have been stuck at work all day.

[jet]

Did you have to pull quite hard to get the fan off?
The heatsink is directly under the fan, its normally aluminium with fins on where all the dust gets stuck, if that came loose and lifted the cpu it could cause all kinds of problems.
You would need to reseat cpu (normally held by a locking screw or a lever)
clean off any old thermal compound with alcohol and thinly reapply some new.

Edit: There are plenty of videos on youtube about cpu replacement that may help

[tiger56]

what were you cleaning the board with? and were you earthed out at the time,as static is not good for motherboards!