Thank you for your kind advices.
About the Nvidia Display Driver
, I know that there is a mixed versions of May and September that are installed in my system, particularly the HD Audio Driver. I did it because the HD Audio driver of September release was causing problems in my 3D games - loss of sound during gameplay - and since I didn't have any of these problem in May version, I decided to custom install the September version while leaving the audio driver remain not updated. Anyway, I did a clean installation of September version now.
I also uninstalled Folder Lock, kLite Codec pAck, ASUS AI Suite & Disk Unlocker.
I will leave temporarily
the Virtu, AVAST, Daemon Tools, and Advanced SystemCare because I used these programs in my other PC but nothing like this problem happened so I think it is not the culprit (just a thought). However, if my problem persists, I will not be hesitant to uninstall it right away, so don't worry.
Also, these programs are important to me and I can't live without them! *an obvious joke*
As for the Maya and AUTOCAD, I used it in my work so I can't uninstall it. I will pray that these are not the ones causing the problem..
I will update you after three days of monitoring of my PC behavior.