I have been using windows Vista for about 2 months and I shut the computer one night and now it states the validation code is invalid

If, when you try to activate Windows Vista on a computer that was obtained from an OEM, you experience one one of the following symptoms. Error message 1
Error Code: Invalid Volume License Key
Error message 2
Error Code: 0xC004F059
Description: The Software Licensing Service reported that a license in the computer BIOS is invalid.
You receive the following error message:
Error Code: 0xc004f035
The Software Licensing Service reported that the computer could not be activated with a Volume license product key. Volume licensed systems require upgrading from a qualified operating system. Please contact your system administrator or use a different type of key. Article KB94962 will help you. If the following error code or error message appears when users try to activate Windows Vista The activation key You typed is invalid This TechNet thread may prove to be of help. If you face Volume Activation error codes on Windows Vista-based computers, KB938450 will help you troubleshoot them.If, when you try to activate Windows Vista on a computer that was obtained from an OEM, you experience one one of the following symptoms.
Error message 1
Error Code: Invalid Volume License Key
Error message 2
Error Code: 0xC004F059
Description: The Software Licensing Service reported that a license in the computer BIOS is invalid.
You receive the following error message:
Error Code: 0xc004f035
The Software Licensing Service reported that the computer could not be activated with a Volume license product key. Volume licensed systems require upgrading from a qualified operating system. Please contact your system administrator or use a different type of key.
.
If the following error code or error message appears when users try to activate Windows Vista
The activation key You typed is invalid
This TechNet thread may prove to be of help.

If you face Volume Activation error codes on Windows Vista-based computers..