blank screen,doesnt boot

underworldmagic · 16 Nov 2012 at 11:59

hi all,

I have a computer with the following spec

Asus p4c800 e deluxe
2 x 1gb cosair xms pc3200
2 x 250gb sata hdd
Radeon 9250 graphics
400w psu

Ive used my computer for a long time with no issues, i was using it one day, just typing and my computer froze, i restarted it from the tower and got a blank screen.

From a cold start all fans are working, light on the mobo, hdds, cd drives etc all working. The screen is displaying nothing.

Ive switched montiors, changed graphics card, changed memory to one stick using new memory, each vairable done and tested each time...still get nothing on the screen.

Any ideas?

wazza300 · 16 Nov 2012 at 12:00

did you remove the motherboard cmos battery?leave it out for half hour then put back in and try

trickynickyuk · 16 Nov 2012 at 12:42

sounds like graphics card

snips86x · 16 Nov 2012 at 12:58

Do you have on-board graphics to test it with?

underworldmagic · 16 Nov 2012 at 15:56

wazza300 said:
did you remove the motherboard cmos battery?leave it out for half hour then put back in and try

No I havnt, I ive just taken it out, i will put it back in in 30 mins, thanks

trickynickyuk said:
sounds like graphics card

Ive already changed graphics cards, still have the same problem

snips86x said:
Do you have on-board graphics to test it with?

Unfortunatly I dont, I just have a AGP graphics card slot.

underworldmagic · 16 Nov 2012 at 16:39

wazza300 said:
did you remove the motherboard cmos battery?leave it out for half hour then put back in and try

Put the battery back in after 30 mins...still the same problem, im getting nothing on the screen...any other ideas?

Thanks

Bacon? · 16 Nov 2012 at 16:39

Whats the PSU.

trickynickyuk · 16 Nov 2012 at 18:21

Yeah could be PSU try 1 stick of memory at a time

underworldmagic · 16 Nov 2012 at 19:51

trickynickyuk said:
Yeah could be PSU try 1 stick of memory at a time

Already tried one stick at a time, also tried another stick i had uses bedfore getting the corsair xms and still the same problem.

The psu is a akasa, been using it for about a year, tested it out of the case manually and there are no probs with the psu.

Im stumped what the problem could be.

TWiNKLeT0Es · 16 Nov 2012 at 21:03

Have you removed all drives and used just CPU RAM and GPU?

Grab a torch and take a good look at all the capacitors on the motherboard to check if any have popped.

underworldmagic · 16 Nov 2012 at 22:50

TWiNKLeT0Es said:
Have you removed all drives and used just CPU RAM and GPU?

Grab a torch and take a good look at all the capacitors on the motherboard to check if any have popped.

Hi, just tried it with just the gpu, ram and cpu and still the same, im getting nothing on the sceen.

Ive checked the mobo and all capacitors are fine.

Any other ideas as to what could be causing this? When it first happened i was typing and the computer just froze, i restarted, and got a blank screen,.

MADEinSTOKE · 17 Nov 2012 at 07:38

Dead motherboard...just had this happen to my sons P.C ...changed every part into his sister's computer and they all worked
Motherboard looked fine physically and the light's all lit up ....but was replaced and it all worked once more

Stalker_26 · 17 Nov 2012 at 07:54

Have you checked the back of the mobo? looking for a solid powdery like substance.
Also - Is your HDD spinning? on the blank screen is tehre a flashing white cursor in the top left? or does your monitor come up with 'No Signal'?

underworldmagic · 17 Nov 2012 at 15:27

Stalker_26 said:
Have you checked the back of the mobo? looking for a solid powdery like substance.
Also - Is your HDD spinning? on the blank screen is tehre a flashing white cursor in the top left? or does your monitor come up with 'No Signal'?

Ive ched the back of the mobo, nothing unusual there.

Checked the hdd, took it out of the case, helf it in my hand and powered up, and its definatly spinning.

The screen is fully blank, no flashing cursor or anything. The monitor just says "no signal"

Any ideas mate?

Stalker_26 · 17 Nov 2012 at 20:40

Hhhmm, it could be one of two things, Agp slot or GPU is dead.
The fact that the gpu is installed and you still get the no signal error make me believe its one of them.
Is there anyway you can test the GPU in another mobo?

underworldmagic · 18 Nov 2012 at 21:25

I dont think its the GPU as I have just purchased a new graphics card and tried it in my computer and get the same thing...so itll possibly be the mobo then?

TWiNKLeT0Es · 19 Nov 2012 at 23:15

Have you tried removing the motherboard from the case and laying it on a non conductive surface and tried booting it that way to rule out shorting?

You could always buy a motherboard speaker to test for beep codes on boot but im unsure if OCUK sell them?

Your case may already have a speaker? What case is it?

Plug it into these headers on the mobo:

underworldmagic · 23 Nov 2012 at 19:21

TWiNKLeT0Es said:
Have you tried removing the motherboard from the case and laying it on a non conductive surface and tried booting it that way to rule out shorting?

You could always buy a motherboard speaker to test for beep codes on boot but im unsure if OCUK sell them?

Your case may already have a speaker? What case is it?

Plug it into these headers on the mobo:

Thanks mate - Thanks for your reply, sorry for not replying earlier

I have changed the motherboard, and now im getting one beep, the computer starts up(blank screen), beeps (short beep) then shuts down on its own one second after the beep.

there is nothing displayed on the screen

I have put in 4 different sticks of memory, checked connections etc. and still just booting, beeping, then shutting down

one thing is, when i switch on the psu from the back, the computer boots on its own, without me having to use the case button...why is this?

Stalker_26 · 23 Nov 2012 at 19:28

Is your CPU seated properly?

Stalker_26 · 23 Nov 2012 at 19:32

underworldmagic said:
tested it out of the case manually and there are no probs with the psu.

Hi, what do you mean tested manually? with hardware connected?
You may have a faulty PSU or it may be overloaded.
Do you have access to another PSU?