first of all welcome to mt
secondly I recommend you to remove system mechanic pro as soon as you can from your pc. it is a real system wrecker and can leave it useless and unussable, you are better of with ccleaner , glary utilities or wisecare 365 free , if you want paid oftware get auslogics boostspeed or iobit advanced systemcare pro. you can add zenmate and https everywhere as extensions to firefox. do you have any backup software? or do yiou trust on shadowdefender solely? why do you not upgrade Bitdefender to the 2015 version?