Re-starting computer

[Guest]

When re-starting my PC in Windows XP, it now stops before the Welcome screen
with a message " Invalid electronic serial number". By pressing F1 the boot
up continues as normal.
How can I prevent this error and allow normal boot up. Thanks

 

[Elmo]

When re-starting my PC in Windows XP, it now stops before the Welcome screen
with a message "Invalid electronic serial number". By pressing F1 the boot
up continues as normal.
How can I prevent this error and allow normal boot up? Thanks

Maybe something here:

http://groups.google.com/groups/search?q="Invalid+electronic+serial+number"&qt_s=Search+Groups

 

[Guest]

Thanks for the info. Exactly right. Just entered old serial number into BIOS
and away it went.