I found why the ati crash with ww2online simple as that the card overheats .The thing is that the curent catalyst drivers have the fan speed set to very low and even lower under windows VISTa here is what you need to do : You're gonna love this and I'd love to take credit for it, but someone named Bretware came up with it on Guru3D.com. Anyway, I'll cut to the chase. All you need to do is change just two values in the XML which is attached to an ATI Profile you created. I tried this and it worked perfectly, other than the noise generated by 65% fan speed as suggested. I'll experiment later. But it works and easy as anything. I edited his instructions just a hair though. See below .... http://forums.guru3d.com/showpost.ph...69&postcount=8 First Enable Overdrive in the Catalyst Control Center. Next Create a new Profile using the Profiles Manager in the CCC and make sure Save All Catalyst Control Center Settings is checked. For Vista 32 Then go to the following location and open the following file for editing "C:\Users\Your Windows ID\AppData\Local\ATI\ACE\Your CCC Profile.XML. The xml file will have the same name as the Catalyst Profile you saved. right click and hit edit. For XP - Thanks Spartan for the path... Then go to the following location and open the following file for editing "C:\Documents and Settings\Your Windows ID\Local Settings\Application Data\ATI\ACE\Your CCC Profile.XML. The xml file will have the same name as the Catalyst Profile you saved. right click and hit edit. Now go down the page until you see the following lines in the XML file ... Change the "Property name="FanSpeedAlgorithm" value=" from "Automatic" to "Manual" Then change "Property name="Want" value=" from "23" to your desired fan speed. Save the file, then reload the Profile you just edited in the CCC. Done. Edit 1: After experimenting with my HIS HD4870 I found a fan-speed of 37% works best for me. My temps went from 79C at idle to 48C. Edit 2: Contrary to instrcutions posted on Guru3D by Bretware, most people are able to set their fan speed to "Automatic" rather than "Manual". Having it set to "Automatic" should allow the fan speed to ramp-up if needed beyond the fan-speed you entered. This doesn't work for me however and I must use "Manual". Edit 3: If you're using the Beta 8.7 Drivers, the XML file will now be located in a subfolder of the "Ace" folder called "Profiles" Edit 4: If you cannot locate the AppData folder you may need to goto Tools -> Folder Options -> View -> and put a check in the box that says "Show Hidden Files and Folders". Part2 or what i exactly did:) OK so the game dosent tend to crash under winXP but still the temperature of the video card by Default when you install the driver is marked at 80'C wich is way too high i actually burned my finger when i touched it So using the provided solution with my Radeon 4850 i changed the fan speed to 40% and purchased 1 extra fan the kind that normally cool your PC case and now the card current temperature is 58C wich is way better I would sugest increasing the fanspeed even further but dont go over 60% the indication of overdoing is normally when the fan starts buzzing ! You place the fan on top of the video card since its quite big the fan can be mounted with small plastic feets wich will provide better stability or put under the card if there is northing obsturcting it also make shure the wind wave is aimed at the card!