it is called 'SLIC', and this 'tech' has been advanced since win 7, so it isn't possible anymore to just 'flash' a mod bios with 'SLIC' with the right info. it is more coplicated then this, as it has a lot with some special table that the OEM ( ASUS ) has installed inside the 'bios' itself. stands for: basic I/O system - a 'basic' software that communicate with the different HW connected to form a PC.Ībout the 'serial' been 'in the bios'. UEFI = latest BIOS technology ~10 years old ( born out of EFI )= CSM disabledīIOS = technology that was invented ~40 years ago! = CSM enabled ( in G751 bios menus ) I mean - does something missing there, that you couldn't post your question there ? P.S - have you picked a look at that sticky before posting this thread (Guide: How to install windows 8/8.1/10 The proper way (UEFI based installation))? You can perform my suggested method to 'upgrade' your product key, without the need to go through the 'official' upgrade process it self ( I.E you perform a clean install with additional little action that upgrade your OS & product key from being 8.1->10 genuine. Then you can choose your 'upgrade' route to get windows 10:Įither perform the 'official' upgrade WITHOUT wiping all your data during the upgrade process ( I.E you must NOT choose 'Clean' upgrade ) So, probably cuz you got win 8.1 pre-installed, inorder to 'upgrade' your built-in product key to be win 10 compatible, you MUST install win 8.1 ( HOME edition, OEM channel ), and you MUST connect to the internet inorder to 'communicate' with MS server, so that your license will be registered in their servers ( you so that by right click on 'computer' -> properties -> look at the bottom to check your license status -> if 'activated' you're OK to move to the win10 upgrade step ) ONLY if your laptop came with pre-installed win 10, you can format & install the same version ( i.e home edition with OEM channel ) to utilize the built-in product key. If your laptop came with pre-installed win 8 -> upgrade to windows 8.1, as only win 8.1 is able to upgrade freely ( till 29.8.16 ) to windows 10.

but one might think from your answer that can use his builtin license just by installing win10 without any special efforts -> that is NOT correct. If you install the right version of windows, the serial is not needed because it's taken by the UEFI bios.

Recover windows 10 license key