Please help me. Whenever I try to type ccleaner or hijackthis in internet explorer, shuts down internet explorer and back to my desktop window. I scanned several times my pc, No Virus Found. They were installed on my pc, and it took me a lot to delete them cause I was thinking that there may be a conflict, and then I tried to dowload them again, and when I type their name in search, internet explorer shuts down. Only shuts down when I type ccleaner or hijackthis. Please help me solve this.