Dear Techspot, I think my computer infected some malware and spyware because: 1) My screen display randomly chaged. 2) I can't log out my internet properly. Therefore, I used "Howard_hopkinso's Instruction" I attached result below: AVG Antispyware Result is Clean. View attachment 22613 View attachment 22614 View attachment 22615 Thank you very much for instruction and helping. From neowing Edit ---> I want to Clean NOT FORMAT.