Windows 10: Lenovo Z580: can't boot from USB or access BIOS

Hello,
I'm trying to clean install Windows 10 on my laptop but I'm having some problems.
My laptop is an old Lenovo Z580 i7. Initially it had Windows 8 but then I somehow managed to clean install Windows 10 on it.
I said somehow because I'm trying to do the same right now, but I can't manage to do it!
The problem is I can't find any way to boot from USB to access to the Windows 10 installer. It's a well known problem with Lenovo Z580 that many people had. When I clean installed a couple of years ago I managed to boot it from the USB, but I tried so many things now and I can't do it!
I tried clicking the Lenovo button (which is how it's supposed to work) but nothing happens. I tried to access the BIOS but it doesn't let me go on it, whatever button I press on boot. I tried to reboot from Windows 10 going on Settings -> Recovery, still I can't get to boot via USB.

Does anyone have a suggestion about what to do?

Thank you.

:)

 

secure boot

Hi can anyone tell me how to boot from usb first on my lenovo Miix 310 101cr idea pad I have tried through advanced recovery options which when in bios I can't see any boot order secure boot is on? Would this stop me from accessing the boot order?

 

Unmountable Boot Volume Error

My Lenovo laptop will not boot. Every time I turn it on, it shows the Lenovo logo with the spinning circle of dots underneath it, but after about thirty seconds, it takes me to a BDOS screen with the error Unmountable Boot Volume. Every solution I've seen
for this says to reinstall Windows 10 using a flash drive or dvd. I have a bootable flash drive with Windows 10 on it, however I cannot access the BIOS to tell my laptop to boot from USB instead. No matter what I do, I can't get to the BIOS screen. I've tried
pushing every function key (with and without shift and/or the fn key). I don't have a novo button.

Any help on how to access BIOS? Or should I just buy a new laptop?

Edit: it is a Lenovo Flex 2 (15 inch)

 

Hi Gnottino90

If you can get into Windows then you should be able to use the Advance Startup Options to get to BIOS, if it is UEFI

Hold shift key down and click restart. That should get the process started.

Boot to Advanced Startup Options in Windows 10

Not sure how you made your USB key. I highly recommend using the Media Creation tool from MS. It will format USB correctly for UEFI boot, Fat 32.


Ken

 

You can do it without even booting from a flash drive using a little known trick as shown here first afaik by user @Kari.

Shrink C drive partition by about 5 GB.

Create new partition in unallocated space and assign drive letter eg D

Download iso to D.

Mount iso as a drive, and run setup.exe from the sources directory - not setup.exe in root of mounted drive.