|I suspect this should be some Malware..|
Try this steps..
1. restart the computer, keep tapping on F8,select safe mode with Networking
2. Once after it get booted, try downloading Malwarebytes
3. Install and Ran the Quick scan
4. If you find any virus remove it, clear the quarantine folders
5. Reset browser settings, clear temp, prefetch and cookies
6. Restart in Normal mode
It would be working fine, still if you find any issues, kindly get back with us.