Says to remove the card. Saying that, it may mean that your bios has somehow changed or failed. Otherwise it might be that a card had been damaged or bumped and not reporting correctly. I guess it could be the motherboard.
The place to start might be view bios and save any of the changes to start. If you find say a modem not there anymore or ethernet card then you may have to open it up and re-seat the card or further diag it.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10