Originally Posted by keops
the mouse doesn't freeze, I'm surprised no one mentioned about the low level of CPU usage, this is where the problem came from but I can't fix it
Confused as in the original post you said the mouse was freezing? :/
So is the issue that your laptop is slowing down and freezing intermittently when you're surfing the internet?
As for the CPU usage indicated, this appears to be normal (but CPU usage will vary from computer to computer and program to program due to factors such as system specifications, operating system, power profile settings / power plan, system processes etc...).
For example, I'm using the Waterfox Internet browser at the moment (a 64-bit version of Mozilla Firefox) and I have 5 tabs open - my CPU usage is averaging 2-5% in Task Manager when surfing a webpage, and goes up to 30-40% briefly when loading a new website.
In any case, have you checked you power settings / power plan on your computer?