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January 20th, 2023 00:00
machine power on but not displaying
Latitude 3490
Hello I have a dell latitude 3490, it powers on but not displaying. any support would be appreciated.
1. LED flashes 3 times in umber color then flushes 6 times clear.
regards,,
David Sunwa
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JOcean
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January 20th, 2023 04:00
That diagnostic code indicates flash corruption detected by SBIOS. Were you doing or did you do any updates prior to this happening? You may be able to recover the BIOS and this support page will help. You can also try by removing the CMOS (coin cell) battery for 15 minutes then reinstalling. The instructions are in the service manual here.