Reinstall OS/Install new OS on ThinkPad T400?
My ThinkPad has become very slow, so I'm planning to either reinstall the OS (Vista Business) or install Windows 7 on it, since I've already tried the other fixes, rather unsuccessfully. Can someone please explain the requisite procedure, step by step, so that the default Lenovo software (drivers?) remain intact? (My Q: drive contains 4+ gigs of Lenovo's preloaded factory software, so should I just format my main drive and re/install the OS?)