Help

[DJ shepherd]

Ok, on a windows i have, i dont know what is going on. I try to go online, i go to google, and a plesk domain error shows up. ive had other stuff like this screw me up before too, i cant even find plesk or other software related to swsoft, not even in program files, I JUST WANT TO GO TO GOOGLE AND YAHOO! it wont let me...help...
not only that, I NEVER DID INSTALL IT, it just showed up one night