It sounds like you have been attacked with malware.
Don't Panic! The HJT Support Team are very proficient with these sorts of things.
With that said,
I recommend that you read this article…
"IMPORTANT - 5 Step Process: Read This Before Posting For Malware Removal Help"; follow the instructions
very carefully; then, post all the requested logs and information; as instructed, in the
HiJackThis Log Help Forum.
(Simply, click on the coloured links to be re-directed.)
Please ensure that you create a new thread in the HiJackThis Log Help Forum; not back here in this one.
When carrying out
The 5 Steps, if you
cannot complete
any of them for whatever reason, just continue on with the next one until they are all completed.
However,it is
extremely important to make mention of the fact that you could not complete any of the steps in your post to
The HJT Help Forum; where an Analyst will assist you with other workarounds.
Once done,
please be patient, as the Security Team Analysts are usually very busy; one of them will answer your request as soon as they can.
After your system has been verified as clean, if your are still experiencing those problems come back here and we will assist you further.