Hello, sorry your topic has fallen through the cracks.
Your native langue is French, and your Speccy report is displayed in the French langue, so that may be why no one offered to help you.
Can you please describe what you consider a slow computer?
Does it take an unusual amount of time for your computer to boot up?
Does it take an unusual amount of time for a program to execute?
Slow loading pages in your web browser? If so, what browser do you use to surf the web?
What I am looking for is a general idea what you feel is slow about your computer system, please be as descriptive a possible so I can get a better understanding what you are experiencing.
I seen your image above where it shows your computer is going to reboot in 215 seconds. Was this caused by a program update that required a reboot in order to finish the update?
Is it related to an Anti-Virus program requiring a reboot to remove malicious software or quarantined files?
The more information you can give me the better the chance I can come up with a solution or a suggestion on what programs we can run to detect what the real problem is.