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CMOS Settings Wrong

By ddouglas ·
The machine I am working on is a small desktop Gateway 800Mhz with only USB connections. When I go to boot up, the message comes up, CMOS Wrong.
I have pressed the F1 to get into the BIOS and there is NO response from the Keyboard(USB) I understood that USB isn't recognized in DOS, Is this true?, If so, what is the work around?

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by Curacao_Dejavu In reply to CMOS Settings Wrong

connect a normal keyboard temporary to the laptop to access the bios and modify settings.


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by ddouglas In reply to CMOS Settings Wrong

This isn't a laptop. As I said previously, This is a small DESKTOP UNIT, NO PS2 ONLY USB Connections

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by dmiles In reply to CMOS Settings Wrong

Try booting the computer with a boot disk that has USB drivers on it.

Explanation: A checksum is computed as an error-detecting code, to protect the BIOS settings stored in the CMOS memory. Each time the system is booted this number is recomputed and checked against the stored value. If they do not match, an error message is generated to tell you that the CMOS memory contents may have been corrupted and therefore some settings may be wrong. BIOSes react in different ways to encountering this sort of error. Some will warn the user and then continue on with whatever settings were in the CMOS. Others will assume that the settings that were in the CMOS were corrupted and will load default values stored in the BIOS chip "for safety reasons". The error message will indicate which your system is doing.

Diagnosis: The most common cause of checksum errors in CMOS is a battery that is losing power. Viruses can also affect CMOS settings, and motherboard problems can also affect the stored values.

Recommendation: Follow the instructions in this section to address the CMOS corruption. You should make sure that all of the BIOS settings in the system are correct, by rebooting the system, going into BIOS setup and double-checking all the values (hopefully against a recent BIOS settings backup).

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