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After setting up my Exos my 6800GT has video corruption

ScottFern

ScottFern

Diamond Member
I just added a Koolance Exos system to my rig. I used the 200G CPU block and also the GPU-180-L06 (Vid/MB) block for my 6800GT. The first time after setting up and booting into windows I go in ok, but there was very little corruption. However, I checked the temp of the GPU and it was at 45C. After I reset it again, there was corruption again from bios screen to loading windows and this time the screen just shut itself off after trying to load windows.

My system actually did this 2 times before I had the watercooling but without the video corruption, it tried to load windows and after the monitor just shut itself into save mode. After a couple resets windows came back seeming ok.

What could this be? Is my 6800GT dead? Or salvagable? Problem is I used AS5 adhesive to put the ramsinks on it says that its permanent!

My theory is that I may have incorrectly installed the ramsinks although they are sturdy and not budging, maybe I used to much adhesive paste? I did the 1:1 ratio with parts A and B too. Someone shed some light onto this mess for me?!?!

All I can think of also to explain this is that I was running the PNY 6800GT at 400/1000 for a long time and also I had mistakenly uppeed the agpv to 1.6V when its 1.5V default. Maybe it couldn't take this speed or voltage?

HELP!
 
After reseating the gpu block I have corruption in the bios screen and windows loading but when I get into WinXP desltop there is no corruption. however, the computer is very slow and the screen keeps flashing black and then back into the destop over and over every 30 seconds(like its refreshing or reseting itself). The GPU temp is at 45C right now i checked. I am totally puzzled right now???? All I can think is these damn ramsinks don't work at all?
 
YIKES. DON'T PANIC. (SCREAMS). Sorry, i'm sure thats not funny to you right now. there are a couple of possible problems. First of all, that temp is pretty high, what temps are your cpu at and how do you have the system plumbed? Second which thermal adhesive did you use? Third, what thermal paste do you have between the gpu and the waterblock? that should give me good enough bassis to start making inteligent guesses.
 
yeah the temp doesn't seem like it is the problem to me. it really seems like he either got a bad board or got some paste or adhesive where it shouldn't be. Also i have a x800 with a custom heatsink that runs at 35c idle and 45 max with a little extra voltage to boot so that may seem higher to me than it is.
 
Originally posted by: DerwenArtos12
YIKES. DON'T PANIC. (SCREAMS). Sorry, i'm sure thats not funny to you right now. there are a couple of possible problems. First of all, that temp is pretty high, what temps are your cpu at and how do you have the system plumbed? Second which thermal adhesive did you use? Third, what thermal paste do you have between the gpu and the waterblock? that should give me good enough bassis to start making inteligent guesses.
Click to expand...

My CPU is at 29C. Plumbing? Purple Ice AntiFreeze + steam distilled jewel water. I used a mixture from Arctic Silver. It was 1:1 ratio with paste from Tube A and Tube B. I mixed some up on a plate and used the spreading tool to paste it onto the ramsinks and then applied them to the actual ram chip.

Between the GPU and waterblock I have some Arctic Silver 5 applied.

I just put a payment to a member on this board for a BFG 6800GT OC. :-(

I can get some pics up later tonight. Pardon my crappy picture taking skills.
 
It doesn't seem like overheating to me - these cards are built to get up to 100C+ before shutting down, and nothing 2D should cause that. One thing I have seen cause similar problems, is a bad powersupply. However, an Enermax 470W should be giving enough power for that stuff. That said, if the Koolance system is running off your psu, then it just might be that you're straining the psu a bit much. If you had another (better) psu to test it with, that'd be good...
 
While it does look like you used a bit too much AS on the core, I don't think that is your problem. Just in case though, wipe it off with some high purity alcohol. Then put a very small amount (about 1/2 to 3/4 of a bb) in the center of it before applying the waterblock. You don't have to worry too much about getting it all over, though you can spread it with that tool if you're concerned about that. Just make sure that you are able to actually see the core through the paste, that's how thin you want it.

As for the ramsinks, you might be SOL, sorry to say. Since you used adhesive instead of the regular stuff, they may be stuck there permanently, unfortunately. It looks like you again used a bit much, at least from looking at the second ramsink in pic2. While I don't think that it is enough to give you the problems you're experiencing, you might want to try underclocking the ram and see if you fix the problem that way. Start at 400 (800) MHz and work your way up if it seems to work.

I hope everything works out.
 
yeah, there is a lot of as residue on the resisitors around your core, first thing i would try is to clean all that up. Any AS is very conductive and they could be throwing off your voltages. check for any thermal pase or thermal adhesive on anything other than the top or the ramchips and teh center or the core. believe me i ahve done it before and I thought i killed my x800 but with a good cleaning it was fine.
 
I think the ram chips are fine, but the core could use a bit of a cleaning, maybe you should try some non conductive paste instead.

Also Koolance has a much better custom cooler for the 6800gt/ultra for anyone contemplating this mod
 
I just thought of something. I used Arctic Silver 5 on the ramchips when I was using my NV Silencer rev5. Shortly after, a couple days later, I did get the error screen after windows loaded.

Assuming I did a decent job applying the AS5 to the ramchips can that cause electrical interference just being on the top of the chip????
 
Originally posted by: JasonandBecky
45c core is not high. My 6800 Ultra runs around 47c with no load and 58-60 under load ( overclocked some).
Click to expand...

45c core seems very high for water cooling, my BFG 6800GT @ 400/1100 with stock cooling runs 48c idle and 57c under load
 
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