Yep. Usually the recovery disks are meant just to work with the brand of laptop that they were made for, hence your troubles. If your computer is unusable, you'll probably need to buy a Windows disk. However, if the recovery partition is still intact, you can try and access it by holding down 0 and then turning the laptop on (keep holding down zero). If it is still there, you should be able to restore the laptop back to factory settings.