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Last reply by 01-16-2023 Unsolved
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1 Amber
1 Amber

Flashing the bios on Inspiron 7548

Inspiron 7548


I have a Inspiron 7548. I think my bios might be corrupt and am wanting to re-flash it. My computer shows a built date of 2015 according to the service tag. I have tried to use the F12 option, but it does not show the flash bios option. Is there some other way of flashing it.  The computer will not boot up as is. 

Thanks for any help you may provide.


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3 Zinc

If you think your BIOS is corrupt, first try resetting the it's configuration to the factory default settings, as that may resolve your issue. If you can't POST, disconnect both the power adapter and the battery from the laptop, and then remove/disconnect the internal coin cell battery (page 27 in the service manual). Leave the coin cell battery disconnected for at least 2 minutes to clear existing the BIOS settings, then reinstall/reconnect it and reassemble the laptop. If the laptop is able to POST, you should get a message stating that the BIOS configuration is invalid and that the default values will be loaded. If the laptop fails to boot (load the OS), you either have to reconfigure your drive settings in the BIOS, or there's an issue with the boot drive.

Normally, if the BIOS hasn't been updated or manually configured, there shouldn't be any corruption. If the computer previously worked fine and one day it wouldn't boot, it could be something else, like a failed or corrupt storage drive, or system board component.

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