I'm disappointed in PC Reviver. I downloaded the initial free trial and scanned my computer but didn't buy the program to actually fix the problems it found. There is no way to stop it from starting up when you boot up your computer and it actually prevented access to my desktop. PC Reviver would start up and there were no icons on my desktop, not even my taskbar. Closing out PC Reviver didn't help, the desktop remained completely blank. I had to reboot into Safe Mode to access anything on my computer. Trying to uninstall the program didn't help and eventually I had to do a system restore to fix my computer. Not sure exactly what happened but there is my experience with PC Reviver.