How to Fix Svchost for Vista

1. Scan the contents of your laptop or desktop for Trojans or other types of viruses. Remove any items that could harm your machine after your scan concludes. Reboot your system when the scan finishes, and then scan your computer once more to verify that your operating system has no viruses.
2. Download the replacement hotfix for Windows hotfix 916089, which is called hotfix 927891. The former hotfix may cause computers to malfunction during the utilization of Windows Installer (a tool that helps to update computer software). Reboot your laptop or desktop when you finish the installation of the 927891 hotfix.
3. Place the Windows Vista startup repair utility DVD in your DVD drive. Shut down your machine and then turn it back on. Push the 'Enter' button on your keyboard to boot directly to DVD. Choose the 'Repair your computer' function, and adhere to the directions on your screen to complete the process.