The installer you are trying to use is corruptedor incomplete. This could be the result of a dameged disk ,a failed download or a virus. You may want to contact the author of this installed to obtain a new copy. It may be possible to skip this check using the/NCRC command line switch (NOT RECOMMENDED).
Error with Single Installer Disable any download accelerators and download the installer again. Update any active anti-virus and download the installer again. Disable any active anti-virus and download the installer again. Download the installer from another source. It might be corrupted on the server, or the connection to the server is unreliable. Download the installer using another computer and copy it to the original computer using a reliable media.
Error with Multiple Installers Disable any download accelerators and download the installer again. Disable any firewalls and download the installer again. If it is installed, uninstall the http://forums.winamp.com/showthread.php?postid=1895971#post1895971" TARGET=_blank>nVidia firewall and download the installer again. Scan for, and remove malware Scan for, and remove viruses Scan the hard drive using scandisk, chkdsk, or any other hard drive repair tool Download the installer using another network connection and copy it to the original computer using a reliable media.
Random or Start-up Errors Scan for, and remove malware