Asus Laptop Repair

Asus ROG Zephyrus M15 GU502 Disassembly (RAM, M.2 SSD upgrade options)

In order to remove the bottom cover, you need to first remove all the screws that secure the bottom cover, then insert a plastic sheet or an old credit card between the bottom cover and the body, and then slowly move the plastic sheet to use the latch to detach from the body.

remove the bottom cover

After the bottom cover is removed, you can access most of the internal components of this notebook, including battery, SSD, memory, cooling system, speakers, motherboard, and so on. At this step, you can upgrade the memory and SSD, but before touching any internal components, please disconnect the battery cable.

Internal picture

ROG Zephyrus M15 GU502 uses a cooling system called Glacier, which has dual 12V fans, 6 copper pipes, and 4 air outlets. It also has a plate covering the surrounding power supply chips and video memory.

This notebook has a 16GB DDR4 3200MHz memory soldered on the motherboard and has a free SO-DIMM slot. I installed a 16G BDDR4 3200MHz memory to form a dual channel.

It comes with an Intel 660P 512GB, which is Intel’s first SSD with QLC particles. There is also a free M.2 slot at the bottom of the memory, you can add another M.2 SSD.

ASUS GU502 comes with a 15.4V, 76Wh battery. According to ASUS data, it can support 8 hours of local video playback or 6.5 hours of web browsing.

David Tian

David is the editor @ MyFixGuide. He loves technology, especially good at laptops and mobile phones. In his free time, he loves to take apart the latest mobile phones and laptops.

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  1. Hi and Salam,
    I am facing an issue after I got my M15 back from a repair and the issue is that my Keyboard is not lighting up. All keys are working just not lighting up. No white, no RGB, nothing at all. I am not sure whether whether the BESTBUY guys forgot to plug in something or it is a software thing. Please guide me. I have tried every software update there was. If possible let me know if there is a cable I can check in the back.

    1. The keyboard of this notebook has two types: backlight and non-backlight. You should confirm whether your notebook keyboard has backlight or not.

  2. Hi I need a motherboard for this machine. My machine wont turn on at all. Sent it to a repairer but said the motherboard is faulty

    1. Why do you need to remove the CMOS battery? Most laptops nowadays don’t have a CMOS battery anymore, most of them have a 3.3V output from the laptop battery to supply the CMOS circuit, so there is no need to have a separate CMOS battery.

  3. Hello,
    I had a bios update on this laptop and my computer never would post again. I am assuming somehow it got corrupted. I am trying to find a way to flash the bios but what I have tried has not worked. I have changed my ram and disconnected the battery with holding the power button for 40 seconds but that hasn’t worked. Please help me save my laptop as it is 2 months out of warranty and they will not help me.

    1. Please go to the ASUS website to download the factory BIOS for this laptop and then restore it to the factory BIOS.

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