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Repair and Disassembly guide for the 2020 ASUS G15 G512LI, A laptop produced by Asus for budget/light gaming.

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I came back it was turned off and has 0 signs of life

I'm having the same issue. Laptop was fine and running. Went to the bathroom and when I came back it was turned off and has 0 signs of life. I've read online something about replacing CMOS battery but I'm unable to figure out exactly where it is. I have disconnected battery, held down power button for 1 minute and it's still behaving this way. No obvious signs of damage on MOBO. Doesn't even recognize when I plug it into power.

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Hi,

"Doesn't even recognize when I plug it into power" sounds more like a problem with the DC-In jack (supplier example only), being loose or is broken internally, than a corrupted BIOS problem preventing a normal start.

What may have happened is that if the DC-In jack is loose from the motherboard or the +ve pin connection is internally broken in the jack (it happens), the motherboard does not get any power to either charge the battery, so it goes flat or to run the laptop either.

Check if you get a power connected indication on the laptop by plugging the charger into the laptop and gently, stress gently, slowly move the charger plug up and down and side to side in the jack to see if the power light turns on and off. If it does it indicates a problem with the jack.

If it does or even if not, you will have to open the laptop and check if the jack is just loose from the motherboard or if not then whether it is faulty and needs to be replaced. If you have to replace it, most probably you will have to remove the motherboard from the laptop case.

FYI there is no separate CMOS battery in the laptop. The 3V RTC (Real Time Clock - aka CMOS) battery supply most probably comes from the main battery as is the case with most laptops these days and not from a separate coin cell battery connected to the motherboard.

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So the only issue I have is if it was DC Jack the laptop would've gone into battery saving mode and I would've noticed. Also the charger was warm to the touch at the time I came back to it. Also upon visual inspection of the port on MOBO nothing looks burnt out and all joints look soldered still.

@Brandon Johnson

I would still check that there was 19.5V at the plug of the charger and also prove electrical continuity from the input of the jack to the output of the jack for both the +ve and -ve leads of the input power supply. You can't see an internal break in the jack

If that's all OK then there's a motherboard problem as it is not indicating that external power is connected to the motherboard.

I was just trying to eliminate the easy possible causes because if they're OK you will need the schematics for the motherboard to find out what's wrong. I couldn't find a free download but the price is not to bad considering how relatively new the model is.

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