when I start my computer a message comes up.It says.Installhook@yahk4@z . How do I get rid off it?

Answer 1

i'd be interested in a screenshot of that item. Contact me via email if you need help with that.

It is likely associated with spyware/trojan or something along those lines.

Answer 2

Here is a simple tutorial on how to cleanup your computer. They are real basic steps, but it is a good first step to take and will often clean out 95% of the junk (such as spyware, viruses, etc) off your computer. All the tools used are free of use. Here is the link:
http://www.cleancomputerhelp.com/how-to-cleanup

Here are some simple tips & techniques to keep your computer running a great shape:
http://cleancomputerhelp.com/computer-tips-techniques

Here is a list of Free Anti-Virus Tools:
http://www.cleancomputerhelp.com/free-computer-tools/cat_view-4

Here is a list of Free Anti-Spyware Tools:
http://www.cleancomputerhelp.com/free-computer-tools/cat_view-3

Here is a list of Free Firewalls:
http://www.cleancomputerhelp.com/free-computer-tools/cat_view-2

Here is a list of Free Online Scanners:
http://www.cleancomputerhelp.com/free-computer-tools/cat_view

What is a Virus? Find out here:
http://www.cleancomputerhelp.com/what-is-a-computer-virus

What is Spyware/Malware/Adware? Find out here:
http://www.cleancomputerhelp.com/what-is-spyware-malware

Here is a list of Miscellaneous Tools:
http://www.cleancomputerhelp.com/free-computer-tools/cat_view-1

If you can't resolve the problem, I'd recommend you visit one of the free online support forums here:
http://www.cleancomputerhelp.com/online-support