Originally posted by MiLkY1210
Make sure you have a disc in your Ps3 and always exit to xmb and launch game from the disc logo, if that still doesn't work and it black screens again, go back into multiman and instead of just pressing X on the desired game, hold down select and press X.
Oh, just noticed its MW2 you're having trouble with i had the same problem, and it was definitely solved with the select+X method, im 100% positive of this. Remember to make sure you have a disc in the drive when you do it and click on yes when prompted. You will only need to do this once and then multiman remember how you launched it and does it the same way everytime there after, enjoy MW2!!