No video signal from 5850 in DP35DP

November 20, 2011 at 00:50:55
Specs: Windows 7, Q9505s 4GB DDR2-800
Hi everyone, I have a very interesting problem here.
A while ago I was running a 6850 in the x16 slot, and decided to try and run a 5850 from a x1 slot also (for openGL reasons).

I only had a 550W PSU and the PC shut down briefly after powering on, and I was worried that I'd fried something.

Strangely, the 6850 would no longer output video in the x16 (all the computers fans would spin etc) but the 5850 would. The 6850 was tested and working in another computer afterwards.

Fast forward, I'm using the 5850 and end up moving the DP35DP to a new case and PSU (which was working a day earlier, 650W).

Now the 5850 isn't outputting video in a similar fashion (As in, all the fans spin, DVD drive works, hard drive powers on, etc). Same goes for two other 5850s I have access to.

I tried with the old PSU and the result is the same.

I've tried clearing the CMOS and updating the BIOS (but the BIOS update didn't take).

I'm at a loss for what to do next, please help.


See More: No video signal from 5850 in DP35DP

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#1
November 20, 2011 at 01:19:58
U need a working system to be able to perform a BIOS update plus u don't update BIOS unless u know the update will fix the problem.

Remove the video card and start the system(i know u won't see a thing on screen) now do u hear a beep? U need onboard speaker to be able to hear startup beeps. If the system is working u should hear a beep or windows startup sound.
List the brand names of your PSU.
Make sure additional power is connected to the video card.


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#2
November 20, 2011 at 01:24:20
There is no beep without a video card, but I believe this board has a broken on-board GPU, which has been broken since before I bought it years ago on ebay.

I know it has a speaker because it beeps when there is no ram inserted.

The old PSU is a 550W "GW" and the new one is a 650W "Huntkey".

Both are tested and working after this incident in another setup, so I believe it isn't either of those.


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#3
November 20, 2011 at 01:41:20
Do u hear single beep when video card is connected? The hunkey and gw aren't good PSU brands, did u test hd 5850 and 650w hunkey in another system?

You know the real meaning of peace only if you have been through the war.


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Related Solutions

#4
November 20, 2011 at 02:14:27
There is no beep with a video card installed or not.
As for the rest, as I originally stated:
I have tried with THREE different 5850s which all work in another system.

Both power supplies work perfectly in another system with no related parts.


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#5
November 20, 2011 at 03:02:10
I suspect the PSU can't provide enough power for both CPU and the video card that's why i need to know if the hunkey PSU works well with hd 5850 in another system.
Do u have another v-card other than hd 6850 & hd 5850?
When the system used to work fine do u hear beeps when u started it?

Edit: Did u try hd 6850 with hunkey PSU and with old PSU?
You know the real meaning of peace only if you have been through the war.


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#6
November 20, 2011 at 03:35:22
Should have mentioned I actually was using the same three mobo/CPU + GPU + PSU before I swapped them to a new case.

When I swapped them I was using the huntkey, which worked on a different computer yesterday with another 5850.

I tried with the old PSU, the GW when the huntkey didn't work, meaning it was the same parts that were all working together the day before, but to no avail.

After doing this I tested both the GW and the huntkey with a 955BE and different 5850 as well as the same 5850, and all was working.

I've got a 7600GT but I can't get hold of it until tomorrow.


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#7
November 20, 2011 at 06:53:31
psu's are crappy even if they worked on other systems.
since u got a 7600gt i suggest u test it with the board ( DP35DP) if it worked try to do some gaming on it for about 30 mins and if it remained stable then the problem is with psu since 7600gt is not that power hungry. if still the same i would say motherboard damaged or faulty and could not keep contact with video cards.
did u check that psu cables 6-pin are connected to the video cards?
Since u tested with another board and with the same psu's and it worked, then motherboard would be first suspect. do what i and kuwese mentioned and post back results

computers are a second home
NVIDIA GeForce
GS_Toxict51


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#8
November 20, 2011 at 08:26:23
Both PSU's and video cards are working OK.

If u hear beeps when ram is removed then CPU and Board are working.
A bad board can still beep when ram is removed but let not assume that.

Remove the board from the case and try to use one stick of working memory to start the system. Do u have other cards like audio and network card? if yes remove them.

When the system used to work fine did u heard beep when u started it?

You know the real meaning of peace only if you have been through the war.


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#9
November 21, 2011 at 00:01:17
To put it frankly, not only do I know for a fact that all 4 video cards and both power supplies are fine, I already had this problem with a different video card that was solved by changing it.

This to me says an odd motherboard problem that is likely not fixable without the purchase of a new, unrelated video card (the three 5850s are the same model).

Unless anyone can think of anything other than a CMOS reset or a BIOS restore, I'm going to just assume this board is dead and shell out the $60 for a new one.


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#10
November 21, 2011 at 02:40:07
Better test the board outside before buying a new one. I don't think another video card will solve the problem.

You know the real meaning of peace only if you have been through the war.


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#11
November 21, 2011 at 06:45:53
u can test the board before doing any thing hasty, remove memory all of em and check that the speaker cable is connected(usually its a black and red wire with the word speaker written on it) then check if its beeping

computers are a second home
NVIDIA GeForce
GS_Toxict51


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#12
November 21, 2011 at 06:51:32
Not trying to be offensive but every single "answer" here has either been irrelevant or something I've tried.

Kuwese, I don't know why but you seem to have misread almost every single post I've written.

"I'm going to just assume this board is dead and shell out the $60 for a new one."
The board. Buy a new board, not card.

The speaker is built into the motherboard, toxict51. I don't know why you would even ask me to "remove memory", as I've stated that it beeps without it. I've also tried with both sticks, and each stick individually, in all 4 slots.


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#13
November 21, 2011 at 08:17:10
U didn't reveal important information from your first post.
U failed to answer my question.
The reason i told u to test the board outside is sometimes when a board isn't properly installed it touch the system case which can prevent system from posting. I don't want to assume the board is bad i want to make sure the board is bad.

You know the real meaning of peace only if you have been through the war.


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