Screen brightness decreases by itself: consequence of a virus?

Hello, does your screen change brightness when you're using the PC or when you're not doing anything on it?

Well, to see if there's an infection, please post a ZHPDiag, thanks.

Open this link and download ZHPDiag:

https://www.commentcamarche.net/telecharger/utilitaires/24803-zhpdiag/

Save it on your Desktop.

Once the download is complete

for XP, double-click on ZHPDiag

for Vista, Seven or Wind 8, right-click on the icon and run as administrator.

Don’t forget to check the box that allows you to create a shortcut on the Desktop.

/|\ the tool created 2 icons: ZHPDiag and ZHPFix.

Double-click on the ZHPDiag shortcut on your Desktop for XP, otherwise right-click and run as administrator!!

Click on the magnifying glass to start the scan.

If you get a message asking for validation for SIGCHECK, accept with OK as this is to provide us with a more complete report for in-depth analysis.

Let the tool work, it may take some time

At the end of the scan, click on the camera icon and save the report on your Desktop.

Close ZHPDiag at the end of the scan.

To send it to me, click on this link:

https://www.cjoint.com/

Click on "choose a file" and find the file C:\Documents and settings\your_username\desktop\.ZHPDiag.txt

or directly by choosing Desktop and ZHPDiag.txt, click on it

Click on Open.

Click on "create the cjoint link".

A link of this form:

http://cjoint.com/data/0KAoeRbq7Szgg.htm

will be added to the page.

Copy this link into your response.

And if there’s a problem, go through this one: http://pjjoint.malekal.com/

--
Personally, I may not know much, but if the little I know can help, then
I’m happy to share it with you!!

Hello,

Thank you for your response! In the meantime, I found the solution to my problem (which I put in my first post) and apparently it doesn’t come from a virus or malware (thank goodness because it's a bit complicated for me).

However, thank you very much for taking the time to reply to me :)