Go to hardware web site for driver updates
If you know the hardware that is in your PC, I recommend you go the hardware manufacturer's web site and download the driver updates for Win 7. If you don't know what hardware you have, go to computer, properties and run the device manager. You can scroll thru the listing and see what hardware you have. I had to update drivers for Nvidia, ATI and Asus utilities. I received a message on one PC that ATI Catalyst Manager was not compatible with Win 7 and needed to be uninstalled before update. I also had error messages on my ASUS motherboard utilities. My TV tuner card would not work in Media Center....I just went to Hardware devices and clicked update driver and it fixed that problem. I just went to the support section of their web sites and downloaded and installed the driver updates. All my errors where fixed.