My internet explorer home page is Porn Site

Hello,
I have a problem in my pc. Everyday when I start my internet explorer it pops up with some porn site everytime changing. I have tried to change my start page to blank or google.com but still upon restarting the browser it revert backs to the porn sites. Is it a virus or some malware installed on my pc. Please help

try this:
go into your registry and delete the following values if you find them:
HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://your-searcher.com/sp.htm
HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://your-searcher.com/index.htm
HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://your-searcher.com/index.htm
HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://your-searcher.com/sp.htm
HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://your-searcher.com/index.htm

Restart in safe mode

Go to My Computer and open it.
Go to Tools, Folder Options and click on the View tab. Make sure that "Show hidden files and folders" is checked. Also uncheck "Hide protected operating system files". Now click "Apply to all folders"
Click "Apply" then "OK"

Now find and delete:
Go into your start up folder and delete, winlogin.exe
C:\Documents and Settings\All Users\Start Menu\Programs\Startup\winlogin.exe --> file

Reboot your computer

Hey!
Yeah that sometimes happens when you are too excited and click some unknown links that redirect you to a pron site which is malicious and intends to infect your computer...! you need to get a good antivirus program and update it till date...! It may require you to format your computer if you can't get it working with the antivirus alone...! All the best...!!:whistling :whistling

Try "Ad-aware" or "Spybot".

It's probably in your StartUp Folder or in the Registry "Run" keys.

What OS?

I had the same thing happen to me and I found that this handy tool works very good. What you have is a CWS hijack. This tool will get rid of it and return your start page to normal agin. After you get done downloading it just click on it and click FIX. http://www.spywareinfo.com/~merijn/Files/CWShredder.exe