Please can you try at least two if not more of these On-line scans, Removing any items that are foundPandaTrendMicroBit DefenderKasperskyMcAfeeStinger Also please use one or both of these Trojan scannersa2
or download and tryTrojanHunter
(Note Trojan Scanner 30 day Trial)
Once you have done that can you clear out your cache folder again ie: Run CCleaner
(Note in CCleaner: go to >options > advanced > Uncheck "Only delete files in Windows Temp folders older than 48 hours").
Now can you scan for Spy/Malware there are a number of programs that you can use for free Malwarebytes' Anti-Malware
is one of them that i recommend after running the program you can post the logfile here.