To help you and prescribe the remedy, I must make a diagnostic and to do so, I require a report.
1. Open this link and download ZHPDiag2 :
http://www.nicolascoolman.fr/download/zhpdiag/?wpdmdl=803
(Don't be alarmed is the site is in French, it sometimes happens, the tool will take your system language and allow the download if you get a warning message, ignore it.) Click on the download button
2. Save the file on your Desktop.
3. Double click on ZHPDiag.exe and follow the installation instructions.
(For Vista, Win 7 and 8 users, click right to ensure you execute with admin right)
4. Double click on the short cut ZHPDiag on your Destktop.
5. Click on Full.
Wait for the tool to finished (maybe a long time)
6. Close ZHPDiag.
7. To transmit the report, click on this link :
http://www.speedyshare.com/
8. Search the directory where you installed ZHPDiag (usually C:\desktop\zhpdiag.txt).
9. Copy the url link obtained from Speedyshare and paste it here in your reply.
Ambucias
Moderator and Virus/Security Contributor