HijackThis is a powerful tool created by Merijn that can help you figure out what is running on your computer. Many computer help forums such as ours use the output of HijackThis (called a HijackThis log) to help us understand what may be causing your PC to misbehave. Here's how to create a HijackThis log:

Note: HijackThis is a powerful tool that can severely change the software running on your PC. You should only run HijackThis if you have followed the directions in our Get Rid of Spyware Guide, or if instructed to do so by an expert in our Help Forums.

Download and Install HijackThis

First, you will need to download the HijackThis program.

Download HijackThis

This is a setup program that will automatically install the HijackThis and CWShredder programs in a C:\Program Files\HijackThis folder on your hard drive. Double-click the file you downloaded, and accept all of the default options.

Note: You can remove these programs at any time via the Add/Remove Programs utility in the Control Panel, or by clicking Start -> Programs -> HijackThis -> Uninstall HijackThis-CWShredder

Create a HijackThis log file

After you have installed the program, click on Start -> Programs -> HijackThis -> HijackThis. The utility will start and you will see the following screen:

Now click on the button marked: Do a system scan and save a log file 

This will scan your computer for ALL the programs currently running on it, as well as those set to run on startup. Be patient - this may take a minute or so. Once it is done, Notepad will open with a log file:

Click on the Edit menu and choose Select All to highlight all of the text. Then click on the Edit menu and choose Copy to copy the log to your computer's clipboard. Next, go back to the Help Forums. If you already have posted a question, go back to that question and click the Post Reply button. If you have not already posted a question, click the New Topic button. Then paste (click on the Edit menu -> Paste) your log into the text area.

Once you have posted your log into the forums, go ahead and close HijackThis.

Fix Entries with HijackThis 

At some point, an expert may reply to your question and tell you to mark certain entries in HijackThis. Start HijackThis again (click on Start -> Programs -> HijackThis -> HijackThis) and click on the button marked Do a System Scan Only. You will see a window like this:

Check the boxes next to the entries that the expert told you to remove. Then click the Fix Checked button at the bottom left. Follow any other instructions the expert may have given you.

After you reboot your computer, you may submit another HijackThis log for analysis. Simply go through the instructions above for creating a HijackThis log file.