Slow Shutdown Problem. Some people have noticed that they are experiencing a really slow shutdown after installing Windows XP Home or Professional. Although this can be caused a number of ways, the most clear cut one so far is happening on systems with an Nvidia card installed with the latest set of drivers. A service called NVIDIA Driver Helper Service is loading up on start up and for whatever reason doesn't shut itself down properly. The service isn't needed and can also increase the amount of memory available to your system. Here is how to disable it. 1- Go into your Control Panel 2- Select Administrative Tools and then click on Services 3- Right click on the file "NVIDIA Driver Helper Service" and then select STOP. 4- To stop this loading up every time you boot up your PC Right click it again and select properties - then where the option "Startup Type" is shown - make sure it is set at Manual like we have shown in the image below.