My laptop often frezes

[Thanh Tùng ??ng]

Does the system clock continue to update while the computer is frozen ?
While frozen, if the 3 keys 'Ctrl@ 'Alt' and 'F2'are pressed together does anything happen ?
Do certain activities always trigger a freeze ?
If you power up and leave the computer idle for a couple of hours does it freeze ?

While my computer crashes
- The clock does not update the time
- The 3 keys Ctl, Atl, F2 do not work when pressed simultaneously
- My computer is only used to update social networks and watch YouTube
I'm not sure but maybe it freezes when I try to open some browser tabs or some applications