|First unplug. Press power button a few times then re-plug in ac and try again. |
If fails then try to open bios and see what devices are shown. Might have to use auto configure to setup hard drive and cd's.
What the thing is saying is that there is a problem either real or false that says your computer doesn't seem to have the same hardware it used to.
"Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10