ATI 4850 COD4 resolution problem

Hello all, I am new to this forum.

Anyway, I just bought an ATI 4850 after selling my 8800GT to a friend. It installed fine, but I get a weird video resolution problem when I try to set the video resolution in COD4. I have a 22" widescreen that runs 1680x1050, but when I try to set COD4 to this resolution the computer freaks out and goes into some kind of video testing mode. It goes black and then to vista desktop, then repeats about 8 times. After all this, it settles in on a resolution of 1440x900. After exiting the game, my vista resolution is screwed up too and I can't change it unless I reboot. Quite annoying.

Any suggestions? I searched some, but I have found no similar problems yet.

I have an Asus P5E-V HDMI with 4 GB of Gskill 1066 running an E7200 mildly oc to 3200 with 600w ultra x2 ps.

I have updated the ATI drivers with the hotfix, but not fully updated the COD4. I had a problem on my other system trying to go to 1.7 so I did not do it on this system yet. I guess I will give it a shot and let you know.

I would be exceedingly careful about saying anything remotely negative about the 4850. This forum seems to be rife with ATI zealots that will crucify you at a moments notice. I you are having problems with that card, you are apparently part of the same microscopic minority that I belong to. I feel for you and would not have you suffer the same fate as me.

I am wondering if it has something to do with unloading 8800gt drivers and loading 4850 drivers. I went through it in proper order: uninstalled 8800 drivers, uninstalled ntune, installed 4850 drivers, installed hotfix.

No luck yet. Just hoping someone has come across something similar. I would just reload vista and try again, but I have loaded this box 3 or 4 times in the last month just playing with different OS and I really dont want to do it again!

Have a couple of them (8800/9800) in my 4 systems.

Want to try ATI again.

Just want ATI to work.

You may be right.

Only time will tell.

extremely helpful comments there mousemonkey.

clearly there is a problem testing other games is a must to eliminate hardware issues.

Why thank you.

Not really enough rabid Fista fanbois to get a decent reaction going.

COD4 and Vista have known issues ..dont blame ATI , there cards are awesome!!

now install xp ..have fun ...

maybe COD4 is too heavy for 4850

i play on CGC 74.86.232.75:28960

how well it fits, find it there
http://www.tomshardware.com/forum/ [...] elero-4850

if i can play it, and many websites reviewed the card with cod4 benches. i think your assumption is not valid at all.

i reinstalled pb, and did everything so that i can play cod4 with vista, never could. so xp it is.

Lol My case is even funnier but still my cod 4 is at 1.0 no patch yet.

4850 + 650 w coolermaster psu extreme
ran on xp at 80 with all max at 1.6k reso.

my tournament profile gets 200-201 fps (tourney lots of extra details i took out xD)

AND NOW
WHEN IT'S ON VISTA ULTIMATE 32 SP1..

lol i get so confused
imagine this
7-9 fps
but it doesnt run like its 7-9 fps

but it isnt that smooth either probably 30-40 fps with gay displayed fps.

hmm i cant say ati sucks

i do enjoy their graphic cards.

this is the first ati that i actually have an issue with