Let's get rid of the infections first before installing the AV program.
Do a HijackThis scan & place a check next to these items and select "Fix checked":
O2 - BHO: (no name) - {259F616C-A300-44F5-B04A-ED001A26C85C} - (no file)
O2 - BHO: (no name) - {97A7E50D-063B-49AF-8A83-37ADE5620F9C} - blank (file missing)
O2 - BHO: ToolBar888 - {CBCC61FA-0221-4ccc-B409-CEE865CACA3A} - C:\Program Files\ToolBar888\MyToolBar.dll
O2 - BHO: XBTBPos00 - {E552EEFC-DE97-45D4-BA1A-F534A1B4A579} - (no file)
O3 - Toolbar: ToolBar888 - {CBCC61FA-0221-4ccc-B409-CEE865CACA3A} - C:\Program Files\ToolBar888\MyToolBar.dll
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Restrictions present
O6 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
* * * * * *
1. Download this file using either of these links
http://download.bleepingcomputer.com/sUBs/combofix.exe
http://www.techsupportforum.com/sectools/combofix.exe
* IMPORTANT !!! Place combofix.exe on your Desktop
2. Go to Start → Run →
paste in the single line command & click OK
"%userprofile%\desktop\combofix.exe" /v jkkjh vtuttqn unaoakg hhvnbyac
3. When finished, it shall produce a log for you. Post that log & a fresh HJT log in your next reply
Note:
Do not mouseclick combofix's window whilst it's running. That may cause it to stall
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