Hello, and welcome to TSF!
Please download
HijackThis. Create a folder at
C:\HJT and move HijackThis.exe there. Run a scan and save the log file. Post the whole log file here. Do not fix anything since most of them listed there are harmless (some are system required). This program will help us determine if there is any spyware/malware on your computer.
BTW, I am moving your post to Security.