SOLVED: Laptop not turning on - ROG Strix G15 G512LI

Laptop not turning on

Hello. I got an Asus G512L which doesn't start, from a day to another. I manage to make some measurements on the mother board and got to a an IC ( AYK M16 879 ) witch has 19V on the one of the pins ( i assume is the input ), no voltage on the output coil ( output to gnd = 36.3ohm) and 3,3V on one of the pins ( i assume is the enable pin for the IC). Based on all this investigation, without any datasheet of the IC, i think that the IC (AYK M16 879) is dead. Does anyone has any idea what this IC is ? I put also some pictures with the IC.

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Posted: Feb 16, 2026

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Hi @webmaester

Are there any components nearby which are designated on the board e.g. U number, C number, PQ number etc?

I couldn't find a boardview file for the motherboard which shows the location on the motherboard of all the components shown in the motherboard schematic, which would make it easier, but if there is a designated component near to the IC you're interested in, then if you use the search function in your browser to search for that component in the schematic you may be able to find the IC that way as it may be on the same page of the schematic.

The components in the schematic have the model (or type) number of the component shown next to each component.

If you do find the IC in the schematic, search online using the information for the IC from the schematic and not what's on the IC as most likely it's a manufacturer's code that is on the IC itself.

As an example only here's an image showing components PQ8901 and PQ8902 as seen on p77 that shows what I mean.

PQ8901 is a PKCH2BB mosfet and PQ8902 is a QM3058M6AC which is another mosfet but different.

Hopefully this makes some sense to you.

(click on image)

Hi @webmaester

Here's the boardview file that may help.

You have to zoom in a lot, 700%+ to use it.

Cheers

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Hi @jayeff, big thanks for the info and for the hint. I managed to find the IC and the circuitry for it, it's the VCCIO for the CPU. I need to remake the measurements as the target voltage is quite low and can be easily mistaken with 0V.

Feb 16, 2026 by webmaester

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ROG Strix G15 (G512)

Laptop not turning on

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Update (02/16/26)

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