sorry for posting in full cpas
nd i didnt hav caps lock on wen i used alt+enter
but i have tried using shift key along with alt+enter
nd also used alt+enter without shift key
i havnt downloaded any dlc
i read the
Post
IW4M: Common Fixes/Errors/Questions
and tried these solutions but it didnt work
13) Black Screen On Start-Up
Press alt + enter to go windowed. You are receiving an error in the background. Find out the error, and see if there is a post already about it. If not, feel free to make a new topic.
31) I get a random error message on start-up
On start-up, It means you have either moved your MW2 folder, or you have moved your IW4M files. A re-install should fix the problem. But please note, DO NOT MOVE ANY OF THE FILES AFTER THE INSTALL HAS COMPLETED, unless you know what you are doing. Again, Re-installing will fix the problem.
i also tried re installing da game nd also reinstalled iwm4 using the Client Installer
if any 1 could guess the error it would be apreciated