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Invalid electronic serial number

Posted on 2000-04-24
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Last Modified: 2013-12-29
When cold-booting a compaq deskpro 4000, there are key-like symbols across the bottom of the screen followed by the message "Invalid electronic serial number". Next I need to use F1 to boot.
Is there any way to correct this message which has just recently been appearing?
Thanks
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Question by:nbcs
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hewittg earned 100 total points
ID: 2744044
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by:nbcs
ID: 2745740
Since we are on spring break this week, I will have to try your answer on May 1.
Thank you

Ps The systems board was not replaced, but I have had problems with teachers properly shutting down the computers each night.
Custodians turn off the circuit breakers.
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by:hewittg
ID: 2745745
Ok,
Just hope it helps.

If not, let me know.

Glenn
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by:rayt333
ID: 2745760
Wonder if it could be the battery going bad, and it is losing the CMOS setup causing this error to pop up, this is just a wild guess
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by:firewire
ID: 2747944
When systems are improperly shut down the os and any other programs running or loaded up in the background stand a good chance of becoming corrupt.
If this happens often some files including the os and extended bios area {on most Compaq the majority of the bios and setup is flashed on the hdd}may have been corrupted.
Reflashing with the softpaq may solve this problem.
I hope this helps.
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Author Comment

by:nbcs
ID: 2752859
Couldn't wait until Monday so I went into school today and used your advice to correct the problem.
Thank you so much.
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