Windows 7 - No Bios after installing Windows 7

hello please help. well I had windows XP, and I updated it on windows 7,during installation I did not formatted C disk. and installed win 7 on C disk. windows created (windows old) folder on c disk. The installation process ended succesfully. but the crach come after it. when i tried to turn on my computer, on screen, there appeared such massage: The bios could not installed, please press "g" . it seems i have no bios. please help me, may it be of the reason, that I didnot formatted C disk?

What can you do after pressing "g"?

did you Check your PC with the Upgrade Advisor first?

Download Details - Microsoft Download Center - Windows 7 Upgrade Advisor


For better help with problems, Can you post your specs.
Filling out System Specs
System Info - See Your System Specs

Dont Know What Hardware You Have..??
VistaForums SysInfo Tool - Vista Forums

Also, is this the complete message? :

Hardware initiate failed, please check device!!! The BIOS does not be installed. Press <g> to continue"

This has been reported to be an error message on some systems where a SATA I device is installed on a SATA II port.

You system specs, including the brand and model number of that hard drive is very important.

Also note if you changed anything in the system (hardware) before installing Windows 7.