My laptop is
Acer Aspire V5-473PG and I used
windows 10 Pro 64-bit. And my battery is already dead around 1 year. Now, when I turn on my laptop, it always shows something like this :
Boot media is missing, Please insert bootable media....
But, I can boot with legacy boot mode, not UEFI. So, I think my UEFI firmware has some problem and I want to upgrade my UEFI. So, I download correct BIOS for my laptop from acer website and it contains only one executable file.
When I run that file to upgrade BIOS, it shows
Please insert system battery and I can't upgrade.
I already search many ways on internet, but not working. So, please anyone help me how can I upgrade my bios without battery.