7805u Blue Screen Bonanza

I hope I can get this posted.

After increasingly common blue screens, which I believe to be caused by an overheating 9800M gpu, I started tweaking with stuff I saw here and elsewhere. I tried BIOS changes, RivaTuner, and undervolting. Now I can't hardly go 5 mins without a BSOD.

 

I cleverly hit post moments before another BSOD, but the last 5 or so restarts won't go 30 seconds without crashing (i'm now on another PC). In the 8 milliseconds it gives me, the error message appears to say "A timing interval was not received by a secondary...."

I'm afraid I have a doorstop now. I'm also afraid it's the kind of thing that even reformatting my hard drive and re-installing windows won't help.

PLEASE HELP!

 

Before you started tweeking things did you take the machine apart and give it a good cleaning. That is generally the easiest way to cool down a card.

Tweeking with no real goal insight can cause some serious problems.

Download Ubuntu and run it on your machine as a live CD. It will at least give you a stable OS to look things over.

(fist clean the machine if you havent recently)

 

nevermind I see how it works. thanks. will try.

 

Also check that your ram is stable, try taking one stick out, then the other and see if one is faulty.

If it is a graphics problem, uninstalling the graphics driver will make your CPU do all of the work, which should stop the BSOD.

 

I tried disabling the graphics card in the device manager. Would this do the same as uninstalling the driver? It crashed again, at any rate, with the GPU disabled. I guess now I'm going to try rolling back to an older BIOS. Any chance that will help? I now am pretty confident that the latest batch of blue screens are unrelated to my original blue screen temperature problems. I'm hoping the BIOS is the answer.

 

hmmm... can't flash bios in safe mode, and I'm scared of what would happen if I crashed in the middle of a flash. safe mode seems stable at least.

 

If you think its a video problem best way to uninstall the video driver is to use drive sweeper in safe mode and then reinstall video drivers. Were you able to clean your lappy?

 

Were you able to run the Live CD version of Ubuntu? I wanted to see if your system was able to load all of the things it needed to (especially the video card driver) and that it could run everything. If so you might just have a horribally corrupted hard drive and thats a pretty easy fix.

Or if you dont want to do the live CD thing, do you have a spare hard drive you can pop in the machine and load windows on?

 

I'm not on my home internet, so the download was going to take 4.5 hours. I'm not against trying it, but in the meantime I'm trying other things. I have fully uninstalled my gpu driver, and have run for one hour + with no crashes, which seems like an eternity, compared to what I was getting before. I'm about to try some more graphics intensive stuff to see what happens.

 

If its running on the onboard adapter and not the 9800 then i would say yeah you royally screwed the vid card with your tweeks.

Just to clarify. Did you change the System BIOS or the Video Card BIOS, also did you undervolt the CPU or the video card?

And what exactly did you do to with riva tuner? (if you remember)

 

I flashed the system BIOS to the latest, then flashed it to a modded one that was the guaranteed solution to my problems from this thread : http://forum.notebookreview.com/gat...te-solution-nvlddmkm-video-crash-p-7805u.html

That didn't seem to be helping, so I went back to 9c.25 which is the latest official BIOS. I undervolted the CPU, but did not save any changes with that, because I was still getting crashes. I believe, though I am far from positive, that nothing is changed with respect to the voltage.

All I did with Riva Tuner is move a couple of the sliders down. I did hit apply there, but I can't tell that it did anything, and I don't know for sure if it made any permanent changes. At the very least, when I watched GPU-Z, it was still cranking up to 600 after I made the changes.

I just checked RM clock again, and am confident the voltage changes are back to what they were before I started tinkering with them.

 

Yeah the undervolting will cause crashing when you are not giving the CPU enough juice. Thats your hint to increase the voltage a bit... so no worries there

I hate BIOS so much i see read. Its such a guessing game as to whether or not you have helped or hindered a system when flashing.

The sliders are fine, its just a way to over/underclock your card. About the only hard you can cause is if you cranked them up to max and the card would have murdered itself almost instantly.

Try downloading any of the usable nVidia drivers (i cant remember the latest stable one) but i fount 183.61 very stable... though its old at this point.

See if you can install that after running driver sweeper to get rid of all traces of nVidia software from your system.

Do this all in safe mode to see if you can get the card working correctly again before rebooting to normal windows

 

So will uninstalling the driver undo any damage I might have inflicted with Riva Tuner? I'm hoping that once I get around to putting a new vid driver in there, it will at least be back to where it was when I was blue screening from overheating (or whatever was causing the original problem).

 

Once you wipe out the driver any changes you made will be gone as well (assuming you didnt flash new vBIOS to the card)

If you were overheating that badly you really might want to attack the machine with some canned air and q-tips to make sure you get all of the dust out

 

I did a little of the canned air idea, and it seems to have helped. Windows automatically installed a driver for my video card at some point, and I have been running for 4+ hours with no crashes, including some 3d graphics for which the card is cranking up. Whether that is as a result of the dust bunny I blew off my main heat sink or it's a better driver (from 2009 apparently), I don't know. I was planning on a re-application of all the thermal paste on my cpu/gpu, but I think maybe I can hold off on that for now. Thanks for the help.