Hi friends, will appreciate your help..
I had earlier installed a free Avast antivirus. All attempts to remove its various files from the system were met with Admin restrictions which I was unable to resolve. Further my browsers open with awkward home pages like "http: // yeabd66 . cc/" and earlier something like "9og9le.." or similar, with a threat warning pop-up from Avast. My system also runs much more slowly.
Is there any advise suitable for an amateur like me to handle this issue. Thanks in advance!