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Y540 -17irh flash bios from USB without cmos reset

2020-09-16, 14:30 PM


I recently bought my first gaming laptop - y540 17 inch (i5, rtx 2060). I tried to backflash my laptop to bios 26ww . After flashing when i enter bios everything seems fine, but when i try to load windows the computer freezes after a while (about 30 seconds). i think the freezing is connected to GPU cooling because just after the freeze, fans start spinning (not 100% but quite loud) . Safe mode on windows was working normaly.

I tried reinstaling windows but i cant finish the process, the laptop freezes before I go through all the questions about region, time and username. Because im stuck midway through installation safe mode wont load properly

I want to flash bios from USB and i found this guide: https://forums.lenovo.com/t5/Gaming-Laptops/Y540-BIOS-Recovery-Mode-Flash-BIOS-from-USB/m-p/5026109

I was wondering is it ok to just prepare the usb (parts 1 to 4) and boot from USB (just like installing windows)?


Thanks in advance for any help


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Re:Y540 -17irh flash bios from USB without cmos reset

2020-09-17, 10:29 AM

Hi muszkieter,


The guide you linked should work just fine. Even if you just do 1 - 4.





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