Do you run any other games on that computer besides dosbox?

Try running Doom 3 in a continuous loop. It's pretty stressfull on video hardware.

Yes I run a few other games at the moment:
Call of Duty 2
Quake 4
Oblivion
Call of Cthulhu

I don't think that the problem lies in a defect with my gfx card! Its only 3 months old!!

sorry about the double post finger slipped

If it is a problem with one game - well, maybe the game does not work in DOSBOX...
If it happens always regardless of the game - then the problem is on your side - bad drivers/graphic card whatever...
Try to change output modes in DOSBOX.CONF: surface/ddraw/overlay etc... Maybe you have troubles only with one mode...

Mirek

kleggnut wrote:

Its only 3 months old!!

This proves nothing... Things can break down any time...

Mirek

Hmm, next time it happens try taking a screenshot.

I have tried changing all that and still the same problem. It happens on all the games I am trying to run at the mo (syndicate, eob 1+2,Dune) but as I said it only happens some of the time. None of my drivers have changed since the last time I updated them (about 2 weeks ago) and dosbox was working fine up untill 2 days ago

sorry if i sound like a noob but i've never took a screen shot before how do i do it??

I can't remember how to setup Doom 3 continuous loop so it would probably be better to download the latest 3Dmark and have that run. It's ALOT more intensive than Doom 3 anyways and should really stress your card.

Did you install a chat client or something else that has a tooltray icon?

sorry if i sound like a noob but i've never took a screen shot before how do i do it??

no nothing new has been installed

Wait a sec....

Does the graphics corruption only occur in DosBox or does it affect the whole screen?
If you shut down dosbox then is the graphics problem gone?

it only occurs inside dosbox. Everything else is fine all my other games run fine no graphical errors at all. Plus I don't think I need worry about stress testing my gfx card... I played oblivion the other night for 8 hours solid and no problems (and if anyone turns round and says that oblivion is not demanding i'm going to laugh in their face)

Oblivion isn't as demanding as people make it out to be

Athlon XP 2800+
Radeon X800
1gb RAM

Played Oblivion for 95+ hours @ 1280x1024.

Could have used AA/Ansio if I wanted to. Game played fine with some slowdowns here and there.

Okay, so it's most likely not a hardware problem. That leaves drivers/OS/and dosbox left to single out.

heres a dxdiag report

OK just fired up D-Fend and ran eob2. A minute or two into the game the screen corrupted, I minimized and checked how to take a screenshot with the intention of posting it, then went back into the game and the game screen was fine!!!! Dodgy or what??

Have you tried output=openglnb in DosBox.conf?

not yet I will try it now