Can you please do the following.
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Remove(uninstall) the 'lop' infection by going to here , then downloading and running the uninstaller(s) that relate to the application(s) your wanting to remove. The following selections are available: "Start page", "Search engine", "Accessories Toolbar".
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Scan with HijackThis and then place a check next to all the following, if present:
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant =
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O11 - Options group: [INTERNATIONAL] International*
Now, close all instances of Internet Explorer and any other windows you have open except HiJackThis, click "Fix checked".
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Locate and delete the following item(s), if present. Make sure you are able to view system and hidden files/ folders:
Search for...
ALCMTR.EXE
...using "Start | Search...".
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Note that some of these file(s)/folder(s) may or may not be present. If present, and cannot be deleted because they're 'in use', try deleting them in Safe Mode by doing the following: Restart your computer
After hearing your computer beep once during startup, but before the Windows icon appears, press F8.
Instead of Windows loading as normal, a menu should appear.
Select the first option to run Windows in Safe Mode hit enter.
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Reboot.
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After rebooting, rescan with hijackthis and post back a new log. Please let me know how your pc is now.