My home PC got infected by adware and Multiple Explorer windows were keeps opening 40-50 browsers. I had to kill iexplorer.exe using task manager to prevent my machine crash.
First I try Yahoo AnySpy which I trust a great software for free but that did not help. Then I found this forum article and it did the trick. My machine is not in good condition. Thank you Blade81, Microsoft MVP Consumer Security 2008.
Multiple Explorer windows keeps opening & search function starts - http://forums.spybot.info/showthread.php?t=18318