This seems to be a duplicate of your post here
There has been one reply there so far, but you have not responded to this.
In your post here you have given additional information. If I were you I would now add that to your original discussion thread. it may be relevant.
In the meantime I am locking this thread to avoid duplication of posts and responses.
When I click on any search results from Google or Yahoo, the link re-directs to a different site.
First I queried a search in Google or Yahoo. All resulting links are re-directing to some Commercial sites. I run the Malwarebyte (ver. 1.30), but the problem still persists.
Also, I am not able to open Task Manager or RegEdit. It would open for a brief instance and then disappear.
My desktop is Compaq 1130NX, and it's has Windows XP SP2.