The reinstallation of the OS is not enough, you need to total the format the entire hard drive this will delete everything and then you install a new OS this time around use Linux distro as it is better than the windows OS or antivirus on it.

Then the exiting wallet on that device should be assumed to been already compromised you will need to create a new wallet and send your coins to the new one.

Check this link by LoyceV on which explains problems associated with CTRL-C and CTRL-V