Need your help !!

Sammanu · 27 May 2011 at 14:45

Ok so I have a problem with my PC at the moment and the problem consists of no power to the keyboard, mouse and no display on the monitor. My syste fan is spinning aswell as my CPU fan, and there are two beeps at start up.

I came to the conclusion that it was a faulty motherboard that I had, so I requested a replacement from overclockers to fix the problem...

Today I have recently been delivered my new motherboard, i have built my PC back up and the problem still persists!! Now i'm VERY unsure about what could be the problem!!??

PLEASE HELP ME

Sammanu · 27 May 2011 at 14:49

- Components -
Intel Core i5-2500K 3.30GHz (Sandybridge) Socket LGA1155 Processor

MSI P67A-C45 Intel P67 *B3 REVISION* (Socket 1155) DDR3 Motherboard - (Sandybridge)

Corsair XMS3 4GB (2x2GB) DDR3 PC3-12800C9 1600MHz Dual Channel Kit

Akasa AK-CCX-4002HP Venom CPU Cooler

Sammanu · 27 May 2011 at 14:53

XFX ATI Radeon HD 4870 1024MB GDDR5

&

OCZ ModXStream Pro 700w Silent SLI Certified Modular Power Supply

Sammanu · 27 May 2011 at 15:03

GaryH-21 said:
Can you see 4 LED's at the top of the motherboard? How many of these lights are turned on?

There's only 1 light on at the top

Sammanu · 27 May 2011 at 15:11

GaryH-21 said:
Okay, this means "CPU is in 1 phase power mode"

Now just got to work out what that mean!

Try disconnecting absolutely everything apart from the processor, RAM and power supply and see if it gets any further. If it doesn't try using a single stick of RAM and see what happens.

:edit:

Do you mean there's only 1 light on? or there's literally only one light?

ok i'll try that, 1 phase light on out of 4

Sammanu · 27 May 2011 at 15:14

I disconnected everything apart from the cpu, ram and power supply.. When i booted it this time the CPU fan was running at 100%, which didn't happen last time

Sammanu · 27 May 2011 at 15:33

GaryH-21 said:
How many lights came on? Any beep codes? And you removed all usb devices as well?

Still only 1 light, no beeps were given.. And everything is disconnected apart from what you said...

Sammanu · 27 May 2011 at 15:50

GaryH-21 said:
And just to clarify - You have the 24 pin connection and the 8 pin connection connected to the power supply, yeah?

Did you try only using a single stick of RAM? and if it didn't work, try the other stick?

Yeah there both connected, and just tried the RAM switching and still no luck, and still displys the 1 light..

Sammanu · 27 May 2011 at 16:00

GaryH-21 said:
Well unless you've been extremely unlucky as managed to get 2 faulty motherboards or 2 sticks of faulty RAM, then the only thing I can think of is the processor (but that's not certain yet!) Maybe try re-seating it, make sure it's definitely in properly. Do you have another power supply that you could test with it?

I'm still trying to find out the error codes / phase lights meanings but can't see it in the downloadable manual. I'll keep investigating!

Unforutnately i dont have another PSU i can test with, but i'll try re-seating the CPU now (But I think it's the CPU aswell tbh). I don't think it would be the motherboard again..

Sammanu · 27 May 2011 at 16:11

GaryH-21 said:
Have the beeps still stopped? If so, try hooking up a monitor and see, just in case...

Just tried that, still nothing...

Sammanu · 27 May 2011 at 16:18

Just re-seatted the CPU and still nothing...

Sammanu · 27 May 2011 at 17:02

It must be the PSU or the CPU.. hmm :/

Sammanu · 27 May 2011 at 17:37

If it helps at all I've just tested the PSU with a multi-meter and the readings are all fine...

Sammanu · 27 May 2011 at 17:55

Also, When I press and hold my power button down to turn the machine off, it tries to turn back on after a couple of seconds, of being shutdown, even when I turn the main switch on the PSU off it still attempts to reboot, then it just goes off again obviously because there's no power on...

Sammanu · 27 May 2011 at 18:18

Think I might need a new CPU? can anyone clarify this for me??

Sammanu · 27 May 2011 at 19:19

Don't think I have any of those...

Sammanu · 27 May 2011 at 20:46

jamiegray85 said:
They should be between the motherboard and the plate in the case to mount it. So the screws to attach the motherboard go in to those stand-offs (see pic above) and the stand-offs should go in to the case.

To install them, line up the motherboard with the case to see where they will go and put those stand-offs in first, and then the motherboard should be screwed in to the stand-off. If the rig has been on without these and the bottom of the motherboard was directly against the metal plate it's screwed in to then motherboard might have been damaged during trying to start it up unfortunately.

Unfortunately, there are none whatsoever, and it cannot have been damaged because the motherboard is brand new...

Sammanu · 28 May 2011 at 10:57

GaryH-21 said:
try taking the motherboard out of the case and sitting it on some cardboard or something else non-conductive and start it up. It sounds like it could be shorting!

You should have those stand-offs in the new motherboard box I think?

Ok I'll try that today sometime and post back the results

Sammanu · 28 May 2011 at 23:34

I have now tried running my PC out of it case on the non conductive material given to me in the mobo box, but the problem still remains..

Surely after all these tests it must be the CPU????

Sammanu · 29 May 2011 at 18:05

jamiegray85 said:
Can I get some clarification on what the problem is still? Are you still getting the system and cpu fan spinning along with the one motherboard light but no power to the ports? Any beeps now? Does the motherboard light have a colour (green/amber/red)? Does the fan on the graphics card spin?

Does seem to either be the CPU or the PSU.

Yes the system and CPU fans still spin
There is still 1 blue cpu phase mode light on the motherbaord
Still no display on monitor, no power to keybaord and mouse
GFX card fan spins

I really do think it's the CPU that's gone, I have tested the power supply with a multi-meter and everything is fine...