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April 27th, 2024 15:13

Dell Latitude e6420 bricked after changing boot mode from Legacy to UEFI. This is ridicolous

My dell latitude e6420 got bricked after changing the boot mode from Legacy to UEFI. I am stuck at the dell logo, no way to go forward or to use the options

I tried to:
swap rams,
change rams,
remove the cmos battery, wait (even days) and put it back in 

Tried pressing fn while its booting

Tried pressing D while its booting

Remove the battery pack and use the charging cable only

Nothing works.

Now i understand that this is an old pc, but it's absolutely ridicolous that you can mess it up by changing a stupid setting. I searched on the internet and this is a commun issue appartenly, even on the e6520

7 Technologist

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12.1K Posts

April 27th, 2024 16:13

Have you tried changing back to Legacy. With a system as old as the 6420 it might be a good idea to replace the CMOS battery, a pretty easy job.

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April 27th, 2024 19:29

@JOcean​ that's the problem, it's bricked, i can't change it back to legacy

7 Technologist

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12.1K Posts

April 28th, 2024 00:49

@noxomnia​ Have you replaced the CMOS battery as I recommended?

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4 Posts

April 28th, 2024 09:44

@JOcean​ not yet, i've ordered it

7 Technologist

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12.1K Posts

April 28th, 2024 14:34

@noxomnia​ Let us know how that turns out. My wife has an E6420 and I had to replace the CMOS battery to correct some problems she was having. 

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May 1st, 2024 12:47

@JOcean​ did not work. the bios is corrupted. absurd, all of this for changing a single setting

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