When the lock screen is on, there is little white dots where it is black when it on home screen. when i hook it up to the tv there is no black on the tv. is this a hardware problem? before this started happening, it was freezing and getting hot
The white dots are most likely to be failed pixels in the LCD screen. When the picture elements fail, they switch to clear and what you see as white is the backlighting.
The overheating issue in laptops is generally caused by dust and fluff blocking the cooling fins and ducts or a failed cooling fan, but it could also be caused by a hung process which runs the CPU at a high processing speed. Press control (CTRL) ALT and DEL and look at the task manager and see if you can see any processes that are running constantly near or at 100% to eliminate this being the problem.
The failing display is unlikely to be related to the overheating issue.
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