I've been having some trouble with my computer either blue screening on me or locking up while playing a game, it has locked up on me while not playing a game, but that only happen two times so far.
The file that it noted in the blue screen as been a few files starting with the prefis ati3.., but the one that shows up the most is ati3duag.dll.
I also gotten nvmcp.sys. I've tried updating my drivers.. and reinstalling the games, but had no luck

To get any meaningful help from the slackers here you will need to write down the exact error log thingy..

ok the error / blue screen just happen again while playing WoW, this is what I copyed down from the lower part of the screen:
Stop ** 0x0000008E (0xC0000005, 0xBFAEFFC9, 0X0000000)

ati3duag.dll - address BFAEFFC9 base at BFA92000, Datastamp 4458dbcc

I'm not an expert by any means, but all the BSODs I've ever gotten in the past several years have been due to hardware failures of some sort. My guess would be your video card.

Did you recently update your video drivers? Does your video card have a fan on it? If so check to make sure it's still working. Can you monitor the temp in your case? Are you overheating?

When your computer BSODs it should create a log file.

System Properties - Advanced - Startup and Recovery "Settings" will give you the location and whether or not this is turned on for your computer.

Peeking into that might give a better indication of what is going on. The call to the video driver library may or may not indicate the video card. Memory, hard drive, or a corrupt file could be responsible to name a few.

As fildien mentioned, BSOD's can be caused by overheating (though a lot of times you just get a system reboot). You can try running it with the case opened up and making sure the room you are in is cool or have a fan blowing at it.

Some questions, though:

How old is the system?
If its a somewhat older system, how long have you had the problem?
Of course, had you changed anything in the system prior to the problem first occuring?
(Driver updates? Firmware updates? Hardware Upgrades?)


Anyway, I did some quick looking into the error you posted. There are a number of things it could be.

A number of sources suggested rolling back your drivers to an older version.

One other possibilty I found interesting was: An issue with your ATI drivers and Java (http://www.bleedinedge.com/forum/archive/index.php?t-5789.html). Rolling back the drivers could resolve this. So many sites use Java, you probably don't want to remove the JRE.

Also, I am assuming you are using XP. Is it SP1 or SP2? A couple places suggested getting SP2 due to some issues (http://support.microsoft.com/?kbid=330187) that were resolved with this service pack.

Some blue screens can be issues with Windows interacting with your drivers. The drivers may have been written to run on a system running a patch or update that you don't have yet. Thus, its a good idea to make sure your install of Windows XP is up to date.

Googled the exact error you got, here's a solution a few guys had for that error:

Do you have the ATI control panel running in the system tray? If so look at this thread
http://forum.pcstats.com/showthread.php?t=39313

If not this one is far more comprehensive about that error and how to fix it:
http://articles.networktechs.com/432-p1.php

Google is your friend.