(C: drive or root directory would be the easiest). Save it in an easily accessible location from a command prompt. Download the relevant or latest BIOS update file from. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in this article. A failure during this process may result in your system becoming unusable and users must proceed at their own risk. CAUTION: If the battery charge is less than 10% you may be able to force the BIOS to update from within a DOS environment. If you need to flash a BIOS and the AC adapter is non-functional or unavailable, there is a way for force the flash. When you attempt to update the BIOS within Windows, the update program detects if the AC adapter is present or not and will not continue until it is plugged in.
Forcing a BIOS flash without the AC adapter connected There are cases where you need to update the system BIOS on a portable system when the AC Adapter cannot be determined or is not available. This Article provides Information on how to Update the BIOS on a portable system without the AC adapter attached.
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