i have tried googling for solutions but to no avail, i have 3 monitors in my setup. middle and right are connected to a 4870, while my left monitor is connected to a spare 4650. middle monitor is setup as my main monitor. my system has been setup the same way with no problems in any games for months, including black ops until yesterday. black ops has been starting on my left monitor instead of my main one, and runs incredibly slow all of a sudden but only in singleplayer/zombie mode not multiplayer. i normally play it maxed out no problems, now i have to lower the settings to minimum and it runs fine. due to this i have come to the conclusion that it is because it is using my 4650 when on the left monitor (makes sense). how can i get it to run on my main monitor and use the 4870? again i have no problem with multiplayer it still runs off the 4870 and middle monitor. please i really wanna kill some zombs any suggestions will be much apreciated
Install the video cards into your PC if you haven't done so already. Modern PCs can support as many video cards as you have PCI slots, so installing more cards is easy. If you are not familiar with installing hardware in a PC, ask a PC repair shop to do it for you.
Connect your second monitor to your computer and then open your display settings. In XP, do this by clicking on "Start" -> "Control Panel" -> "Appearance and Themes" -> "Display." In Vista, do this by clicking on "Start," typing "personalization" into the search bar, and then clicking on "Display Settings."
Identify your monitors and move them into place. In XP, you will need to click on the "Settings" tab first. Click on "Identify" to display a large number on each monitor identifying its placement. You should see a picture of your two monitors, which you can drag into the same position as your monitors. You may also change resolution on your monitors at this point.
Click "Apply" to save your changes and exit the display manager. Your second monitor should now display correctly.
Repeat steps 2-4 for your third monitor. Windows should automatically detect this monitor and handle it in the same way as your second monitor.