I've been trying to find others like you!!! Me and a few others I've found who have the K7 Master S have serious video issues. I've tried all sorts of drivers too. I've found that the issues go away completely if you drop the fsb down to 100 MHz, or if you run games in software render mode at 133 fsb. There's definitely something going on with the board and video when the fsb is at 133. I have an Elsa Gladiac Ultra 64, and I've tried another GeForce 2 MX card (different brand, but can't remember which), and both have the exact same behavior. In my case the sound card makes no difference because I've confirmed these tests with every other card out of my system. I've also watched cpu temp and it has never gone over 52 C, so that's not a problem.
The other weird thing is that it totally passed a couple benchmark tests, but craps out completely on any real graphic game. The only variable is how long it takes. I played Rune (UT engine) for about ten minutes once. The UT engine is the only game that dumps any debug info, so maybe that will be useful to someone. My next task is to find a benchmark instead of a game that will fail regularly, so I can get MSI to actually look at the problem, which they won't acknowledge yet (they ran one benchmark with the card, so they think everything's fine).
Let's please coordinate our testing and share our findings because I'm really close to just sending this board back to the shop and getting a totally different brand.
my specs:
MSI K7 Master S
AMD 1.4 GHz
Elsa Gladiac Ultra 64
512 DDR Micron PC2100
ferretofwrath@hotmail.com