My motherboard was replaced after having an issue but during bootup i get a loud beep followed by 'Invalid Chassis Serial Number'. I have looked across forums and they say to press F10 to get into BIOS then CTRL A to be able to enter the Serial Number. First my machine is HP Prodesk 600G1 Tower PC.

The motherboard was replaced by an HP Technician due to a network connection not working. After he left and I turned on the system I get 'Invalid Chassis Serial Number'. The solution posted using the ESC button or F10 did not resolve the issue. Operation Flashpoint Red River Cd Key Generator Pc. Crashplan Proe Cracker.  The only thing that works is the 'F1: Boot ' message with a blue background that apprears in the lower left corner.

Pressing F1 will start the Windows 7 Professional OS but can never get to the BIOS no matter what other button is pressed. The Invalid message occurs first each time the machine boots up. Canon Eos 30d Shutter Count Software For Nikon more.

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