Hello. I have a Lenovo e31-70 computer. I looked for the hidden menu, which is called the advanced unlock menu. I thought about setting it because I don’t like it when it’s 80-90 degrees. In the basic menu, there are no settings for overclocking or fan setting. Currently, it was set to 59c, I lowered it to 45c so that the fan was active. I have not set the overclock.
So here’s your code:
Link: https://superuser.com/questions/1711770/unlock-advanced-menu-hidden-in-bios
After running the code and pressing FN + F2, the BIOS turned back on and added. The problem is that I added more ram (igfx) in the settings in the video section. Save a second time … The BIOS cannot be Fn + F2 to make it appear, only in the right corner a usual short tick flashes, as when looking for the desired device to boot, it goes no further. 
I turn it off, it turns off. Nothing. I found with great difficulty how to flash a USB. Link: https://jackstromberg-com.translate.goog/2020/02/tutorial-how-to-create-a-bootable-usb-drive-to-flash-a-lenovo-devices-bios/?_x_tr_sl=en&_x_tr_tl = hu & _x_tr_hl = hu & _x_tr_pto = sc. Nothing because the image arrives but it just freezes, there is no way to reset it, it just freezes, there is no boot, so the flash doesn’t work either. Maybe anyone knows a key combination or similar that could be used to reset the bios? I’ve tried a couple of times holding x the amount of time … Press this and that key combination, but it tells me which one is right for this laptop, it works. But nothing. So the the laptop is not working because there is a problem with the video display. But in principle, it should be reset by pulling down the battery and the battery. There is no cmos ctrl on the page. How to reset CMOS? Idea? 
