If you have been using your computer for a long time, then either for the sake of maintenance or for the sake prevent further corruption of the system, you seek to restore it. In most computers, this feature comes with a kick i.e. when system restoration happens, all your data goes up in flames.
If your computer is infected beyond your comprehension, or there is one little program that cannot be uninstalled in a conventional manner; your best bet is to access the safe mode perform the operation from there. The Safe mode is a rudimentary mode of operation for any system. It loads only the necessary drivers and applications.
Dell laptops are made for great work, like other computing devices, they work smooth, flawlessly and make your day-to-day task easier. But when a Dell computer freezes the process you trying to work loose too much data or get overheating. Other reasons include virus, malware, Trojans, and spyware too.