Download & Install CCleaner & Do a Registry Clean to remove traces of ask search left!
Ccleaner - http/www.piriform.com/ccleaner/download .
CCleaner is a system optimization, privacy and cleaning tool with an effecient & most useful registry cleaner.
If you complete freeware & most effective security combo for your system,Install Avira with Malwarebytes & CCleaner. It forms a free complete security suite for your system!
Avira Anvivir - http/www.free-av.com/en/download/index.html .
Avira is best & light solution for excellent overall system protection & internet security with real time updates, .
ID the toolbar with HiJackthis (HJT) and remove the entry.
HJT will keep a .reg file to undo the operation just in case.
Remove only what you are sure of, in this case any entry ASK related, as it is a very powerful tool and can cause system inoperability if incorrectly used.
If you are unsure post the log it creates here and we will offer guidance: