Clean Your Mouse
It’s always a good idea to clean computer peripherals, in particular the mouse. Nowadays, mice come in all sorts of shapes and technologies. No matter what’s inside the mouse, it must be clean to function properly.
Dirt prevents mechanical wheels from spinning, optical sensors from reading and lasers and lights from shining. Below an inside shot of a first-generation Logitech TrackMan Marble not cleaned for a decade.

I recently was given a Sharp Actius UM30W thin laptop with technical problems such as sudden shutdowns, display flickering and an unstable network connection. My task was to find out what the problem causes are as well as get the system re-installed, if possible.