Hi :D . Unzip HJT into it's own permanent folder before doing anything in order for it to create backups. (Not a temporary folder & not on the desktop). Close all (browser) windows & have HJT fix these entries by placing a check in the appropriate box=
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = about:blank
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = about:blank
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = about:blank
R3 - URLSearchHook: iSearch Toolbar - {1C78AB3F-A857-482e-80C0-3A1E5238A565} - C:\WINDOWS\System32\toolbar.dll
O2 - BHO: (no name) - {1C78AB3F-A857-482e-80C0-3A1E5238A565} - C:\WINDOWS\System32\toolbar.dll
O3 - Toolbar: (no name) - {ACB1E670-3217-45C4-A021-6B829A8A27CB} - (no file)
O3 - Toolbar: iSearch Toolbar - {1C78AB3F-A857-482e-80C0-3A1E5238A565} - C:\WINDOWS\System32\toolbar.dll
O8 - Extra context menu item: &iSearch The Web - res://C:\WINDOWS\System32\toolbar.dll/SEARCH.HTML
O16 - DPF: {1C78AB3F-A857-482E-80C0-3A1E5238A565} (iSearch Toolbar) - ms-its:mhtml:file://C:\ss.MHT! http://toolbar.isearch.com/install/...les/initial.cab
Reboot. Should now be sweet.