Hi, Welcome to TSG!!
Click on this link:
http://www.thespykiller.co.uk/files/HJTsetup.exe Double click on the file and it will install to C:\program files\hijackthis and create an entry in the start menu and an optional shortcut on desktop.
Click on the entry in start menu or on the desktop to run HijackThis
Click the "Scan" button, when the scan is finished the scan button will become "Save Log" click that and save the log.
Go to where you saved the log and click on Edit, Select All then click Edit, Copy then Paste the log back here in a reply.
It will possibly show issues deserving our attention, but most of what it lists will be harmless or even required, so
do NOT fix anything yet.
Someone here will be happy to help you analyze the results.