Question about Dell Studio XPS 1340 PP17S, 1640 PP35L (C1990SUK1355060141D)
Please remove the external power supply and then switch on the laptop;if it starts that means the battery is working
you can check the battery status by clicking on the battery icon
for bios update it is recommended to have battery to be charged more than 90% and to have the external power connected.
do not switch off while performing bios update as a wrong update can damage your system.
hope this helps!
all the best!
Posted on May 07, 2014
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Posted on Jan 02, 2017
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