Flip2k

Hey all,

I have an Nvidia 6800. So I started having BSODs about 3 weeks ago one saying nv4_disp was the cause of the problem and all others saying NMI:Parity Error/Memory Parity Check. I ran memtests with no errors found, I figured it had something to do with the graphics card as I had the same problem about a year ago. I ended up buying a new card. So today I tried loading up a game and the screen became very scrambled, when I tried rebooting the screen was in very low resolution and would not increase any further. I took the card out dusted it off and put it back in. Same problem. I have uninstalled the Nvidia drivers and the resolution is fine now, I've already tried reinstalling the drivers to no avail. I really don't want to have to buy a new graphics card as I am low on cash these days. Any suggestions on what to do?

Riskyone101

Hello and Welcome to TSF,

Go here for Parity Error:
http://support.microsoft.com/kb/315223

Go here for Driver Sweeper:
http://downloads.guru3d.com/Guru3D--...er)_d1672.html

Go here for the Nvidia 6800 driver:
http://www.nvidia.com/object/winxp_186.18_whql.html

1. Download and install drive sweeper, remove any and all video drivers
2. Go into add/remove in control panel and uninstall any video driver here,
also check in program files folder and delte any files here too.
3. Run Drive Sweeper, remove any traces or files to a video driver.
4. reboot pc
5. install video driver
6. reboot pc

Note: The Parity Error is with your ram

1. remove all sticks of ram
2. boot up pc with only 1 stick in, if boots ok with no error, proceed....
3. install the second stick, if boots ok with no error, proceed....
4. ect.......til lyou get an error, and its the stick you last put in pc.
3.

Flip2k

Ok, after many failed attempts at uninstalling and reinstalling I seemed to have finally initiated the correct sequence of actions to get the card working again. I left the computer off for a while and then proceeded to do as you instructed. Thank you Riskyone101. Everything seems fine as of now, but I don't trust that this will last long. Hopefully I will stand corrected. I will post back in a few days if everything stays stable, if not I will definitely be back to let let you know.

Riskyone101

Great! glad to hear it!

So your not having the parity error as of now either?
And yes dont mark thread yet solved let it run a few days and then post back with results.

If any errors start to happen again, then run memtest86:
http://www.memtest86.com/

Burn the image to cd disc here:
http://www.imgburn.com/index.php?act=download
very simple burning program to use I find, and it makes any corrections that are
needed with your permission to.

Note: when running memtest, only have 1 stick of ram in the pc at a time,
otherwise you will get errors reported.

Flip2k

The thing about the parity errors was that it was very sporadic. My desktop would run for several hours without it happening. But I will run that memtest if it occurs. Also, do you think it would be safe to run a game? Given that that was the reason for this problem occurring I would hate to risk having the card in the same ordeal again.

Riskyone101

Sure go ahead.
Check device manager and make sure you dont have any yellow ! marks there.

You can go here for finding out if you can run a particular game or not:
http://www.systemrequirementslab.com/referrer/srtest

Flip2k

well it seems as if my celebration was too soon. After about 3 hours of running my computer this morning I received a BSOD stating that nv4_disp was in an infinite loop, upon rebooting I find that I am in the same predicament. Low resolution with 4-bit colors. I'll see if I can get it back to how I had it before...

Riskyone101

Replace the cmos battery. (nickel size)

You can find the battery in walmart, pharmacy, auto store stores.
for a couple of dollars.

Flip2k

I've decided to just order a new card, I figure the card was defective... event the boot screen was becoming scrambled. But, what would replacing the battery do?

Riskyone101

Nevermind my last post, it was a mispost.

Make and model of pc?
What are you running?
M/B
CPU
PSU (brand and wattage)