Please help!!!everything i search on google internet explorer and firefox redirects me..?

for about a week now ive been getting redirected to different sites on searches from internet explore and firefox check dnc and network connections ive tried everything possible megabytes.org stopzilla i purchases pchealth cleanup ive done a ccleaner download as well and it says that i have no malware or spyware at all no viruses or nothing.... however i keep getting redirected from google to different sites....i even tryed to look through the host file and watching youtube to delete other connections except for mine but all there was , ::1 localhost but didnt delete it. its so difficult..... i even did a disk clean up can someone please give me an easy solution and answer to maybe fix this plz ugh this is so frustrating serious people only plz thanks so much