No charging or power-up lights on Laptop 13 (AMD Ryzen 7 7840U)

I have a Laptop 13 (AMD Ryzen 7 7840U). I’m seeing behavior very similar to what’s described in this thread. All of the guidance I can find about this issue is written for Intel Core mainboards, so I have no idea how to proceed. For example:

  • Is the procedure in this guide under the heading “If the side LED doesn’t light up” also recommended for AMD Ryzen mainboards? Should it be modified in some way for AMD mainboards? (In my case, the procedure as written has no visible effect.)
  • Is the Intel Core mainboard reset procedure in the same guide applicable to my AMD Ryzen mainboard? (This Help Center article suggests that it’s not.)

Behavior

  1. Yesterday evening, my laptop was working fine, and I think its battery was pretty full.
  2. I either put it to sleep or shut it down (I can’t recall which).
  3. As of this morning, I get no charging light when I plug a charger into either rear USB-C port. When I press the power button, I get no power-up light, and there’s no indication that any part of the laptop is receiving power.

What I’ve tried

  • I followed the procedure under the heading “If the side LED doesn’t light up” in this guide. The charging light never came on.
  • I left my Framework charger plugged into the left rear USB-C port for fifteen minutes, as suggested here. The charging light never came on.
  • I briefly plugged my Framework charger into the left and right rear USB-C ports. Neither charging light came on.
  • I briefly plugged a Hama 45W charger into the left and right rear USB-C ports. Neither charging light came on.
  • I verified that the outlets I’m using are powered.

It’s a silly thing, but can you try to use a 5v USB-A charger with an A-C cable?

seen mutliple laptops get in a state with er the ML1220 CMOS battery goes flat or the main battery ends up disconnected and the USB-PD EC ends up unable to properly boot and take a charge until supplied with a simple 5 volt charger which allows the charge controller to wake up and start talking to the the power delivery protocol to switch up to higher input voltages..

This help center article suggests that the AMD Rhyzen mainboard doesn’t have a CMOS battery; the main battery plays the equivalent role. Is the low-voltage charger trick still applicable in that case?

I tried plugging a low-voltage phone charger into one charging port through a USB-A/C cable and then immediately plugging the Framework charger into the other charging port, which is the procedure under the “If the side LED doesn’t light up” heading that I mentioned.

I haven’t tried plugging the phone charger in for longer periods. I’m leery of applying power for longer periods when I don’t know where it might be going. Maybe I should remove my SSD and then try it—but of course, removing the drive carries its own risk of data loss.

Maybe the battery has failed.
Power off laptop and remove the psu/power brick.
To test this carefully ( easy to bend pins) remove the battery from the laptop and then see if it starts up OK or not when the psu is plugged in.

1 Like

the low voltage charger trick has gotten me out of a bind before. But if it’s not doing it within a minute or so of plugging it in, that’s clearly not the trick in your case.

1 Like

Maybe the battery has failed. Power off laptop and remove the psu/power brick.

This works! When I disconnect the battery and then connect the USB power supply, the charging lights start flashing alternating red and blue. If I then press the power button, the laptop powers up and boots normally.

Any idea how safe it is to run the laptop with no battery for long periods? I’m assuming that the battery usually doubles as an uninterruptable power supply, so I’d worry that running without a battery would mean that even the slightest disruption of the USB power supply could lead to erratic behavior.

For anyone else who might have this problem: I followed this guide. There was no need to unscrew the battery; I just disconnected it.

You should be OK with just the PSU connected and no battery. Just remember to keep saving your work as you go along, in case someone pulls the PSU cable out.
Contact FW support, it might still be under warranty and get a new battery for free. Otherwise, just purchase a new battery and you should be OK.

1 Like

Okay, this is bizarre.

  1. I disconnected the USB power supply.
  2. I reconnected the battery and then reconnected the input cable.
  3. When I connected the input cable, the side LEDs started flashing red, which I gather usually indicates that the input cover has been removed with the system powered on.
  4. I quickly disconnected the input cable, but the side LEDs kept flashing red.
  5. I reconnected the input cable and noticed that the power button was glowing. At the same time, I noticed that the monitor was on and the laptop was booting!
  6. The laptop booted normally.
  7. I shut down the laptop, and the side LEDs went dark.
  8. I pressed the power button again, and the laptop booted normally again.
  9. I plugged in the USB power supply. The side LEDs turned orange to indicate charging, and the OS showed a charging indicator on the screen.

This all seems consistent with the idea that the mainboard’s connection to the battery got disrupted, and disconnecting and reconnecting the battery fixed the problem. However, between working normally on Thursday night and not being able to charge or power up on Friday morning, the laptop was sitting untouched on my desk. I can’t imagine any way the connector could’ve been jostled overnight.

What percentage was the battery charge when you plugged it back in?

What percentage was the battery charge when you plugged it back in?

Definitely more than 50%; probably 70–90%. That’s consistent with my memory that the battery was pretty full when I logged off on Thursday night.