Hello guys. I am quite sure that my PC has been infected by something (thanks to the contribution of family members who abuse of my PC) that slows it down a lot.In short: as soon as I turn on the PC, after a few minutes a cmd window appears automatically and for a nanosecond; after that, it minimizes immediately to an icon. By clicking on the icon, the window reopens and the content is this:http://puu.sh/yM360/d83f9749f6.pngIt is something that "downloads itself" apparently. In fact, immediately after the transfer ends I noticed that a process called msiexec64.exe is started; a few seconds and the PC becomes super slow in general.The process is located in a folder called ReinstallBackups (with access denied) in C: \ Users \ Franz \ AppData \ Local. After changing the security settings of the folder I managed to access it and I noticed that msiexec64.exe is accompanied by some other files (including .dll files).It is impossible to close the .exe from the Task Manager, so you have to restart the PC and prevent it from being opened.To do some tests, I then restarted the computer and immediately after booting I deleted the folder.However, the cmd.exe window appears anyway and after doing its job, the msiexec64.exe folder and process reappear magically.How can I get rid of this problem? I desperately ask for your help.P.S .: Among other things, when the PC enters the "slowed" phase, if you try to restart / shut down the PC, I get a BSOD.