Most likely virus related.
Easiest way to deal with it is download a tool like
Malware Bytes and run it.
If it doesn't fix the problem, there are more complicated things you could do, but I would just backup your data, make sure you have the discs/product keys to install your software again and then format and reinstall windows. Your laptop almost certainly has a recovery partition, but if it doesn't, I am sure someone could hook you up with the correct discs.