My PC is unprotected in the yrial period , and hackers keeps changing the settings of my PC

Hello , Thank you so much for your attention and help .
My PC has Windows 10 home edition . HP Pavilion Entertainment vr6700 .
My problems are that hackers keep changing the settings ,disabling , deleting and/or removing some drivers and drives from the PC system , so that my PC does not work properly . For example , the disk clean up drive is now not available and not be able to clean the disks , the open button of the AVG Tune Up page cannot be open for scanning as it did before by clicking , the trouble and diagnose shooting do not work , and the Available Networks Panel only shows the Aeroplane mode and no other selections for Wi-Fi internet access , it usually shows the Wi-Fi for selection as well , and normally on the Wi-Fi mode it showed lots of available secured or open networks .
And my 30 day trial period for the AVG Protection Plan has not been covered , as it indicates ' your PC is unprotected and it expired in twenty something days . 
Would you please help ?  Thank you very much .

Hello John,

I am sorry to know that.
From the description, it seems that the issue is not due to any hackers.
I request you to perform repair of AVG PC TuneUp program once as mentioned in this article: http://avgread.me/1BVxDSY to check whether you get access of all features. If it is the trial version, please let us know the number of days left for the trial.
Please let us know whether you have already tried AVG Protection trial before on the PC where you are facing the issue.