I have a user's laptop that seems to have contracted a virus of some sort. I'm trying to install SAS, as is part of my normal virus cleaning procedure. However, as soon as I doubleclick on the install app, I get a message that says that SAS has encountered an error & must close. I have also been unable to install Malware Bytes' Anti-Malware, & I cannot run the Windows disk defragmenter. Any suggestions you can give on installing SAS would definitely welcomed. I've hit the end of my stump.