GeForce 8800 GTS - no signal to monitor

[Agerkvist]

From one day to the next this problem emerged;

I turned on my computer and it started humming - vaguely louder than normal, which I later decided stemmed from the GFX card fan - but my monitor did not start.

I unscrewed one side of the cabinet and not being a major hardware buff, I didn't see any obvious reasons it shouldn't be working. I continued to blow some dust of parts of the interior and screwed the side back on. This did the trick and I could now turn on my PC as usual - it ran perfectly for several hours until finally I shut it down and went to bed.

Alas, the next day the problem had returned, but this time I couldn't fix it - I tried vacuuming the insides og my pc and cleaning any fans to the best of my ability. No luck. I then tested my monitor on another PC to rule that out and the monitor works fine. Lastly I tested my PC with another GFX card of an older sort(geforce 7500 LE) and this works perfectly aswell

Now, after having done all this I had my GFX card tested at the store that sold it to me and they reported it to be in fine working order.

A little note - the 8800 GTS requires a power cable of it's own whereas the 7500 LE does not so this might be where the problem lies? Alltho, if I connect the 8800 GTS without the power cable it warns me with a long BEEEEP and that is not happening now - I'm unsure if it just checks for a cable to be connected or for actually getting power.

As I said my hardware knowledge isn't much above average so I'm left puzzled which I why I come here seeking help :)

My thanks in advance.

[sandyduff]

I would test the card in another machine... it could be your power supply.

What are your full system specs and model of powersupply?

[Sydney]

I have the same problem on my 8800GTS, would be epic if you could figure out what was wrong.

I sent mine to the oven and it didn't fix it.

[Agerkvist]

I would test the card in another machine... it could be your power supply.

What are your full system specs and model of powersupply?

I haven't got another machine I can test on. But the card was tested by the retailer who sold it to me - they reported both dvi ports to be working.

This is my pc:

http://h10025.www1.hp.com/ewfrf/wc/product?product=3228370&lc=da&cc=dk&dlc=da&lang=da&cc=dk

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00796358&tmp_track_link=ot_faqs/top_issues/en_dk/c00796358/loc:1&lc=en&dlc=da&cc=dk&product=3228370&lang=da

I just changed the gf card at some point.

I know next to nothing about power supplys so I took a picture of mine:

http://img691.imageshack.us/img691/7402/powersupply.jpg

Hope this helps - if not let me know, I will be more than happy to supply any additional information you might want.

Thanks again.

[Agerkvist]

accidental double post

[Agerkvist]

I get this message :

Agerkvist
Thank you for posting! Your post will not be visible until a moderator has approved it for posting.

Is that because my post has links or pictures in it?

[Agerkvist]

more accidents ><

[Agerkvist]

And another - when my post didnt show I made a new one, thinking I had done something wrong :/

[sandyduff]

I get this message :

Agerkvist
Thank you for posting! Your post will not be visible until a moderator has approved it for posting.

Is that because my post has links or pictures in it?

I have no idea... im sure a mod will clear it soon... :salute:

[Agerkvist]

I asked for help elsewhere aswell and was told that I was underpowered, and that my PSU probably finally had succumbed since it's just not powerful enough. I ordered a 550W PSU last night, hopefully this solves the issue.

I really appreciate the help just the same.

[4GHZ_or_bust]

19 amps on 12v rail isn't much. The 8800gts is about 10A at peak and that would leave only 9A left to power up the hard drives, optical drives, and motherboards. That power supply looks like a standard HP used for their cheap build. Most major computer companies build the computer as cheap as possible and often time power supply is at bare minimum that can run and would croak if you tried adding another item.

You were probably running borderline to overload and it had stressed the old power supply to the point it has stopped working.

[sandyduff]

Yup... looks like the power supply is the problem... hopefully your new one sorts it out... :clap:

[Sydney]

My PSU wasn't the problem, Gigabyte Odin 800w, combined 12v at around 40A, running my 8800GTX fine.

[Agerkvist]

So, I just started the PC for the first time after installing the new PSU - tried with the GeForce 8800 GTS first....still nothing....it's exactly the same as with the old PSU.

It should work right away shouldn't it? Or are there certain setting I need to tinker with?

I'm really loosing hope here :/

[Agerkvist]

Reset CMOS again, no improvement.

Bonus info - I tested this with a friend. 3 minutes after I turn on the computer, with the new card installed, he sees me logging onto messenger - so the pc starts windows normally etc.

Don't know if this is significant :)

[Sydney]

Reset CMOS again, no improvement.

Bonus info - I tested this with a friend. 3 minutes after I turn on the computer, with the new card installed, he sees me logging onto messenger - so the pc starts windows normally etc.

Don't know if this is significant :)
This just means that the rest of the computer is working normally.

[Agerkvist]

I installed a new PSU - http://www.lc-power.de/index.php?id=180 (german website but it should be understandable - im not german either ;)) - and it didn't work at all.

Its 550w and I was told that would be fine - then today I get told that I should worry about amps on the 12v rail instead, which this PSU doesn't have enough of? So even with this PSU the PSU could still be the problem?? :/

[Sydney]

I doubt the PSU is the problem, it's most likely the card itself that's dead.

[Agerkvist]

Bleh forgot to write this, but I just had the card tested on another PC, worked fine there, so the card is in good shape.

[Neuromancer]

Considering your HiPro does not even have a PCI-E cable, did you attach the PCIE power cable to the video card?

6 pin cable that supplies extra power to the vide card.

On ATI card the PC tells you if power is not connected, might have come after the 8800 series though...

[Agerkvist]

I just installed a CX400W Corsair PSU - no change at all.

And yes, the 8800 GTS has had a 6 pin cable attached at all times - the card came with a cable.

What the hell can I do??

[thideras]

It is possible you have the same issue as I did. I owned an Abit IP35-Pro and the video card was not recognized in the top slot after some time, I thought it was a PSU issue, like yourself. I dropped it in another PCI-e slot and it started working, although at 4x speed. What did I do to fix it? Returned that motherboard since their tech support was terrible (long story, more than just that board).

I know that doesn't really help as it probably doesn't have another PCI-e slot, but you've eliminated everything else. The PSU multiple times and you know that you have a working card. Only thing left is the motherboard is shot or incompatible.

[Agerkvist]

I'm bumping this old thread of mine as the problem prevails.

I've tried a new power supply and had the gf card tested on two other pcs and it worked fine both places.

I've got a geforce 7500 LE running in the very same port on the mobo right at this moment.

This has really left me in the dark, I can't find any help anywhere - what can possibly be wrong? Hardware problem or software? Reinstalling windows didn't seem to do anything, but I'd be willing to try almost anything to get it working again..

I really really really hope someone is willing to spend a few minutes trying to help me.

Thanks!

[thideras]

Oh wow, old thread!

Did you update the BIOS for the motherboard if there was a newer release? Basically here is how things have broken down:

1) Your main motherboard does not work with this card
2) You've changed power supplies with no result
3) Another video card works in this system
4) The video card works in another system

This means that something is preventing that video card from working on that motherboard. It could be an interface issue (for example, if the card isn't making full contact with all the pins) caused by the board or the case. The other issue could be on a lower level. That BIOS may have a bug with that video card which causes this issue.

Here is what I would do:

1) Remove everything from the case and try it on a flat surface. Remember that the video card has to hang off the end of whatever you sit it on.
2) Update the BIOS on the motherboard
3) Replace the video card

[Agerkvist]

Hey Thideras, thank you so much for taking your time :)

I havent updated the BIOS or anything of the sort.

The problem literally came out of the blue. I had the pc turned on one night, turned it off and the next day I got the black screen when turning it on. I turned it off and took a look inside, didn't really do anything but blow at the components lightly and I could start the pc again - everything seemed fine again. But the problem returned after it was turned off and started the next time.

And after all this time it's become clear to me that the gfx card isn't faulty, but something is obviously wrong.

I've tried cleaning the port and remove any dust etc., but no result from that either.

Trying the parts on a flat surface, that would be to make sure everything is properly connected?

I think i have an extra mobo of another kind lying around, would it be interested to see if it works on that?

[thideras]

Trying the parts on a flat surface, that would be to make sure everything is properly connected?That is correct. This is just to make sure it isn't an issue with it sitting in the slot properly.

I think i have an extra mobo of another kind lying around, would it be interested to see if it works on that?You could do that, but looking at your previous posts, you tried this already and it worked.

[Agerkvist]

Ok, ill try and put everything on the table and see what happens.

Any idea, even remotely, what could possbly be wrong?

[Agerkvist]

So, I just opened the case and put it on the side, making sure it was steady. I blew away any dust etc., attached the 6 pin power cable and mounted the 8800 GTS. It slips in there nicely and it's sitting there nicely. The sideping - or whatever those are called - on the port all seem to show that the card is making contact.

I fired up the PC and the screen was still black. I tried wiggling the card abit, but to no avail.

The PC starts up just like usual, everything is as it's supposed to - except my screen is black :)

If my next move is to update my BIOS I'll gladly take directions, as it's not something I usually fiddle with myself :)