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Оригинальный сообщение: Michaeleangelo ,

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Guys, I was tinkering with the same Acer Aspire V5 laptop.

After choosing legacy boot mode in the UEFI BIOS I was able to boot from linux USB drive, but after that I had no way to enter BIOS to change the boot mode back to SecureBoot.

You tell the RTC battery needs to be removed to recall default UEFI settings, which is a whole pain in the ass - you need to disassemble the whole laptop.

Instead, all you need to do is find 3 pairs of triangle-shaped contacts under the RAM cover.

Motherboard WISTRON Petra UMA 11324-1 48.4VM02.011

These pairs of contacts are:

G2101 - CLEAR CMOS

G2201 - UEFI BIOS password clear

G2701 - power button.

So, to clear all the wrong settings you've done to the Acer V5 471 BIOS, you do not need to disassemble it, just short the G2101 for 20-30 seconds.

Have fun! :-)

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