Can't enter BIOS Lenovo g480

Question

I have a Lenovo g480 laptop its specs:

I5-3210m, 8GB ram, NVidia gt610m, Samsung Evo 870 SSD, 650gb HDD

For over one year I am not able to enter BIOS, I used to enter it by pressing F2 during startup but now I can't, I tried to enter it through nova button and select BIOS setup but it continues to the normal boot, or by entering boot menu when I press tab there was an option for BIOS but it disappears and when I try to restart to it from Windows it just boots to boot menu and nothing else

I tried to boot without harddisk and removed CMOS battery but there was no difference

I tried to update BIOS the official bios says that I am on the latest version

Yesterday, I tried to flash it by putting the bios file.cap - the same version I am on with version number (62cn97ww) and formatted the USB FAT32 type and turned off the laptop then pressing Fn + R. It flashed the BIOS and said flashed successfully but there is no the difference the only difference is that the BIOS setting has been reset and I know that from the clock and secure boot becomes enabled and I disabled it before

I tried to flash an older version as 62cn44ww it comes with extension .wph with the same method above or using wincrisis but it doesn't load

I tried winflash with different version and it doesn't want to flash it with error message:

Corrupted interface descriptors in the new BIOS file. Part Table Signature not found in the Interface. Error code: -161

Even with the same bios that is flashed successfully by the usb method

So now that is the solution of this problems I have been two years with that problem and when I want to edit boot setting or anything I have to do it manually by using easybcd or any other similar program

I am sorry if the question is too long but I wanted to say all the details to have a better help

Thanks in advance

Answer 1

The machine apparently runs.

Get it running for a few minutes. Then Restart (do not shut down).

Upon restart (right away) three things:

1. You may see a message during restart: Press enter key to enter setup. Do this if the message appears.

2. If no message: Allow to get running. Then Restart again. Press F1 repeatedly to enter BIOS.

F1 is the normal Lenovo BIOS access key (not F2).

3. Finally, shut down down, start, and press F1 repeatedly immediately upon startup. I start in BIOS on my Lenovo Desktop this way.

As described above, I can get into BIOS on all my Lenovo machines.

Make certain you are using certified Lenovo BIOS and BIOS upgrade methodology.

If nothing works, there may be an issue with the BIOS. You may have to use the computer the way it is for the time being. Then perhaps take it to a local shop and see if they can update the BIOS.

Answer 2

I had the same problem on my Legion 5 laptop.

Your Windows PC either uses a Master Boot Record (MBR) or a GUID Partition Table (GPT) disk. Even if your motherboard is equipped with UEFI capabilities, UEFI Firmware Settings won’t be accessible if your drive is equipped with an MBR disk. To resolve the issue, you’ll need to switch the BIOS from Legacy to UEFI by converting the MBR disk to a GPT disk.

To convert use in an elevated cmd prompt (disk number is the drive letter of your disk):

mbr2gpt /convert /disk:[enter your disk number here] /allowFullOS

Then restart pressing bios setup button (usualy del or f2 depending on your motherboard). In my case (Legion 5) i had to use the NOVO button.

There is another solution that might help you get into BIOS using the shutdown command in an elevated cmd prompt:

shutdown /r /fw /f /t 0

Hope that helps

Answer 3

Maybe you are using GPT partition, reformat your laptop and make it MBR.