Screen flickers like a mutha

[crotchy]

Ok,i've got a Dell M991 monitor. Whenever i run Call of duty 4 it flickers like a mutha... In the setup screen and the first minute or so ingame. I suspect it has to be a graphic conflict as the screen is old and my Graphic card is a Gainward ATI radeon HD 4850. I've had conflicts with other games as well. My daughter just bought The Sims 3 and after a while ingame or in the setup screen the frames freezes up the screen,and i have to restart the computer manually. I've tested the ram chips and they check out ok. Like i said...could it be a conflict between the Graphic card and the monitor?

 

[Tmagic650]

You may have to lower the refresh rates from the video card to the monitor

 

[crotchy]

ok. Tnx m8 will try and report back

 

[crotchy]

I'm using vista so the 3D Refresh Rate Override is not supported. Going to display properties and changing the refresh rate from 70 to 60 hz. In any case...i'm buying a new monitor

 

[Tmagic650]

The old monitor is an LCD flat screen or a CRT big heavy monitor?

 

[crotchy]

sorry for taking so long....
it's a crt (http://reviews.cnet.com/crt-monitors/dell-m991-display-crt/4507-3175_7-31218545.html?tag=mncol;rnav)

 

[Tmagic650]

Try increasing the refresh rate to 75Hz

 

[crotchy]

will do