My laptop is a Toshiba satellite C55. It is running very slow disabled a lot at startup but still slow. I'm a Maintance worker. I know nothing about laptops
Michael
Back in normal mode, you can check CPU usage. On a fresh reboot with no windows open there should be close to zero CPU activity. Hit CTRL-ALT-DEL and select "Task Manager." Click the option on the bottom of the window to see advanced options then go to Performance tab.
An option to restore the computer is the refresh function in Windows 8. IF you have any files you wan to keep, it might be a good idea to back them up to an external drive before doing this.