Here are a couple of areas to look at if your machine slows down for no obvious reason.
Do the three finger Vulcan salute (Ctrl+Alt+Delete) to bring up the Windows Task manager.
If you see a level 100% on the performance tab try these possible solutions.
If you see near 100% CPU activity on the Processes tab by an "Image name" of Cisvc.exe, you might want to turn that service off.
Description: Microsoft Index Service Helper, a service that monitors the memory usage of Microsoft Indexing Service (cidaemon.exe) and automatically re-starts cidaemon.exe if it uses more than 40 MB of memory.
It's needed if you've set up any of your drives or directories to be indexed. Without it running, you could potentially invite a memory "hole", as the indexing service would not clear its RAM usage, as it goes.
If you are not indexing anything, there's no need for it to run
1. Go to Control Panel Administrative Tools > Services 2. Click on the "Standard" tab at the bottom of the box 3. Click on the Name label to sort by Name. Locate "Indexing Service". Double click. 4. Change the "Startup type" to 'Disabled' 5. Click on "Apply" 6. click on "Stop"
When you print on an LPT printer port, 100 percent CPU usage occurs until the print job is completed. This slows down other programs until the print job is completed. In some case, other programs may slow down enough that they seem completely unresponsive. This behavior affects all power users who have many programs running at one time.
This behavior occurs because Windows 2000/XP does not have interrupt support for LPT printers.
To work around this behavior, print to a Universal Serial Bus (USB) printer port. If the printer does not have this capability, use a parallel-USB cable.