Weid problem! Help fast!

[Daston]

Hi guys

Took my PSU out of my pc to check my inlaws pc to see if theirs had died. Just put mine back in my pc but as soon as it is pluged in or turned on the pc boots up and the case button does nothing!!! I have checked the connections on the case and all is well. The thing is I dont get any posting the the motherboard dosnt boot (no beeps). Any help would be great as I have paid out £250 this week already on the pc!

Cheers

[cloasters]

Does the PSU have a power switch on the back of it?

[Daston]

Yep Tried pluggin in and then turning the switch off but the pc just boots, same when I plug it in and turn the switch on. The PSU works in another PC and so does my Gfx card so I am thinking motherboard

[booman]

You can check the power switch pins on the motherboard.
Your power switch may have died. I don't know if there is a calculated lifespan to those, but they are easy to pick up at Radio Shack or PC Club.
Hope your motherboard isn't dead.
good Luck

[Daston]

I have tried pluggin the power cable in with the front switch unpluged from the motherboard but it still boots straight up. The thing is I dont want to buy a new motherboard if I dont have to

[Rondog]

The power switch on the front of the case could be plugged in backwards. Take it out and turn it around and plug it back in.

[Daston]

I have just droped a the vital parts into another motherboard and and pluged it into my case and it dosnt boot up unless I press the on switch at the front of the case so I am guessing its motherboard related

[Staz]

Well the front panel switch is just a switch and can be plugged in anyway and it doesn't matter. If the switch was the problem the computer would either : A) do nothing when the button was pushed, or B) start the computer as soon as it was plugged in then shut down the computer 4 seconds later.

Since the problem occured when after you removed the PSU from the case I would be worried about possible grounding of the mobo or damage to the mobo around the 20 pin connector.

Just because it boots up when you plug it in does not necesarily mean something is wrong. I have a MoBo that does just that but it works fine. However the fact that it doesn't POST is bad.

Try basic trouble shooting stuff for a no POST.

First remove everything from the board except for CPU (with cooler) RAM and video card. Try plugging in again.

If it fails to POST try removing the MoBo from the case and try again.

[JimF]

Originally Posted by Daston

I have just droped a the vital parts into another motherboard and and pluged it into my case and it dosnt boot up unless I press the on switch at the front of the case so I am guessing its motherboard related

If you haven't done so I'd suggest:
- a CMOS reset with the battery removed
- check all the cables are mated properly (no bent pins etc)
- check for shorts around the mounting pillars (a tiny amount of movement can cause these)

Good luck !

[Daston]

Just ordered a new Motherboard to see what happens there if the same problem is there then my Bro said he will take the mobo off my hands so havent lost anything

[chrisbard]

Make sure you connect the auxiliary power connector (4pins) if the mobo requires this !!!

[Daston]

new mobo working fine now, still not sure why it happend but what a bugger!

[Daston]

Ok I am now tottaly pissed off and confused! Just built my father inlaw a new pc.

Cosisting of

an ASRock K7S41 Soket A motherboard
AMD 2600+ XP
512mb RAM
64mb on board graphics

The PC does the same as the last one! I have checked all fittings and also checked the case switch on my motheboard and that works. This is getting beond a joke I think the PC god has desided to ***** on me this week

[booman]

Are you saying that the New motherboard is having the same problem?
Or the old motherboard you built into your father-in-laws computer is still not booting?

If its the new board doing the same thing then you know it isn't the motherboard.
It could be a power supply problem or another piece of hardware.
I had a board that refused to boot because the RAM stick wasn't properly connected...
Let us know if you figure it out....

[Daston]

this is a tottaly different board and pc, Just my luck really