For those who have problems with antivirus. I had the same problem. I did follow this step:
1. I disabled antivirus for installation of wallet
2. Put password for the wallet
3. make copy of wallet dat and put it on usb.
4. run wallet again put it on.
5. then made antivirus ON and of course it will delete one file in wallet that is suspicius
wallet working normally.

Im not a computer guru but this worked for me.