Can we Revive this OLD Gaming Beast? ASUS G750JM

Welcome to this comprehensive tutorial on fixing a corrupted BIOS in your ASUS G750JM laptop! If you encounter any issues or have questions, feel free to leave a comment.

In this video, I demonstrate the step-by-step process of repairing the corrupted BIOS using a CH341A programmer and a SOIC 8 pin clip. Essential tools include the CH341 programmer, SOIC 8 pin clip, a functional computer or laptop, required software such as AsProgrammer, CH341Par, Ser.exe drivers, a hex file editor like HxD, and basic tools like screwdrivers (small flathead and Philips head).

This guide is not exclusive to the ASUS G750JM; it is applicable to other models in the Asus G750 series, such as Asus G750 JW, Asus G750JH, Asus G750JX, and similar Asus laptops with comparable internals.

Downloads:
Hex editor: https://mh-nexus.de/en/downloads.php?product=HxD20
AsProgrammer: https://github.com/nofeletru/UsbAsp-flash/releases
Drivers: https://www.onetransistor.eu/2017/08/ch341a-mini-programmer-schematic.html
Bios: Google your specific model name with drivers after it, like Asus G750JM bios, and look for the original ASUS website.

🌐 Resources and Tips:
– Purchase the programmer on Amazon, eBay, or AliExpress, ensuring compatibility with 3.3V.
– Additional forum tutorials: https://rog-forum.asus.com/t5/rog-gaming-notebooks/g750jh-bricked-bios-after-update-solved/td-p/584248/page/2
– Upgrade your laptop after fixing it! https://www.youtube.com/watch?v=EnyPFNYiNrM&t=0s

Here are the timestamps so you can skip to what you’re looking for!

0:00 – Introduction
0:18 – Removing the battery and discharging the laptop by holding the power button for 30 seconds
0:25 – Lift the flap and remove the rubber plugs on the back
0:55 – Removing screws on the backplate
2:42 – Removing 2 Ram sticks out of 4
3:20 – Removing disk / CD drive
3:33 – Removing back speaker plate
3:50 – Disconnecting the speaker cable
4:11 – Removing 2 screws holding the top plate to the frame
4:23 – Unclipping the top plate from the backplate
4:50 – Disconnecting 4 ribbon cables from the top plate
5:33 – Removing the CMOS battery
5:45 – Identifying the BIOS chip, and its model name, winbond …
6:05 – Discharging the laptop by holding the power button for 30 seconds
6:13 – Removing ram, fan connectors, ribbon cables, display cable
7:03 – Plugging in the laptop charger, after it turns on hold power button for ~10 secs until light turns off
7:22 – Prepare your ch341a programmer and clip
7:50 – Attaching the SOIC clip carefully
8:20 – Plug in your programmer to your computer
8:40 – Open your programmer software and identify IC, choose correct model name from your chip.
9:10 – Read IC, save the read as backup1
9:40 – Read IC again, save the read as backup2
9:52 – Compare hash codes of the backups, make sure they are the same with CMD.
~$ certutil -hashfile filename md5
10:30 – Open HEX editor and load the 2 files, update file and backup file.
11:17 – Create a new Hex file, newbios = backup[0 to 1FFFFF] + update[800 to 6007FF]
12:56 – Open the newbios file in your Programmer, here AsProgrammer
13:04 – Program the IC with your created newbios file that is exactly 8192 KB
13:23 – Read the IC for a final time, save as afterflash
13:45 – In CMD, compare hashfiles of the newbios and afterflash
14:17 – Unplugging the programmer, charging cable and then the SOIC clip
14:45 – Discharging the laptop by holding the power button for 30 seconds
14:57 – Reconnect the fan connectors, display, ribbon cables, ram sticks etc.
15:37 – Testing if the bios was properly programmed
16:06 – Putting the laptop back together
21:30 – Final test to see if the keyboard and everything works

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