My computer was missing the desktop and taskbar. I am using XP. The google search was also redirecting. I ran Avira, CC cleaner, Java update, Hi -Jack and Super Anti- virus. I downloaded Malwarebytes several times each time it told me it was corrupted when I tried to install it. I attached the files from what I did run. These did not solve the problems I had. I ran combo fix and got the desktop and taskbar back after opening windows explorer, and google now works ok.