Hardly anything wrong, mostly cosmetics.
put HijackThis in e.g C:\Program Files\HJT and NOT on the Desktop!.
Run HJT and have it fix:
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch =