⟐ Commented 7월 26, 2026 at 20:39 GMT-7

And i did reinsert my rams yet still nothing helped

⟐ Answer accepted 7월 26, 2026 at 18:07 GMT-7

⟐ Answered 7월 26, 2026 at 14:32 GMT-7

⟐ Answer edited 7월 26, 2026 at 10:23 GMT-7

⟐ Answered 7월 26, 2026 at 8:49 GMT-7

⟐ Commented 7월 26, 2026 at 3:10 GMT-7

Question, there is a pswd jumper on desktop mobos.

After randomly casting about for ideas, I happened to glance at "JSP11", on laptop

Look at top 2 markings. Does it suggest a way to bridge and reset..

.

⟐ Commented 7월 25, 2026 at 23:34 GMT-7

⟐ Commented 7월 25, 2026 at 23:29 GMT-7

⟐ Answered 7월 25, 2026 at 19:52 GMT-7

• The microphone does not pick up any sound (I gone through every permissions setting, etc). All of the drivers are up to date. I've tried just using the Sound Recorder and it is completely flatlined.
• The camera still works just fine. As do the speakers.
• When I close the laptop, before it goes to sleep, it produces some awful feedback noises if neither the mic nor speakers are muted.

I am tempted to think that it is a cable issue, but the fact that the camera is fully functional gives me some pause there.

The only insult that the laptop has sustained since I last used the microphone was that is was in a backpack in a hot car for a day which had me a little worried. That said, I hadn't used the mic for some time before this, so I do not have a clear link from this to the current state -- I just feel bad that it was in a hot car.

⟐ Commented 7월 25, 2026 at 19:38 GMT-7

The charger it came with seems totally fried, since it doesn't work on other laptops either. But even when I tried using a few other working chargers on this laptop, it still wouldn't light up or respond. It feels like power might be flowing through when it is plugged in, and I even popped it open to try running it straight off the wall charger without the battery connected, but still no luck.

What do you think could be causing this, and how can I fix it? Is the motherboard just cooked?

⟐ Answered 7월 25, 2026 at 19:06 GMT-7

⟐ Answer edited 7월 25, 2026 at 18:30 GMT-7

No bios ,no em.power reset. Buttery removal

Only track poverline

Fuses

Cmos

????

⟐ Answer accepted 7월 25, 2026 at 8:27 GMT-7

This is what I observe

• If I plug in the charger, the blue battery light is stable
• Absolutely nothing happens when pressing the power button: no fans, no lights, no beeps, nothing

I am comfortable with a screwdriver and own an Ifixit pro toolkit so I can get pretty much anywhere, but I have not been able to find any schematics online for this motherboard, and although all ports are labeled, most labels are just some letters and numbers, and not actually informative. Acer and their service partners probably have a list for that, but I wasn't able to find it online, so I'm flying partially blind.

I have tried these things:

There are no peripherals connected to the laptop.

• hold the power button for 10, 25, 30, 60 seconds as well as a lot more times for different durations
• remove battery and charger, hold power button for 90 seconds to drain residual energy
• use a multimeter to confirm the battery delivers power (~16.8V, should be anywhere between 14.5 and 17.9v, so that's fine)
• use a multimeter to confirm the charger delivers the appropriate voltage to the motherboard (measured behind the thing where the power socket wire connects to the motherboard)
• use a multimeter to confirm the keyboard connector has power to ground at least at several pins
• use a multimeter to verify the CMOS battery delivers charge (~3v)
• reseat RAM
• reseat a lot of other connectors
• visually inspect entire motherboard, there are no signs of damage to the motherboard, capacitors, or anywhere else.
• short the 1&2 pins on the keyboard connector to ground (separately) to try and force a boot

Nothing I try seems to make any discernable difference to the laptop behaviour.

This is what I'm looking for

I would like some pointers on what else I can test or verify to try and pinpoint the issue. Currently my only remaining guesses are

1) the keyboard is non-functional, and since that contains the on/off button, the laptop can't turn on because of it.

2) the motherboard is toast, but I consider this unlikely because 1) it's never the motherboard and 2) there are no visible burns, leakages or damages anywhere

Does anybody have an idea on:

• how I could eliminate or confirm the keyboard as a cause (preferably without having to buy a new keyboard because those are expensive for a test),
• how I could test/eliminate/confirm the motherboard as a cause
• what other things I could test

Thanks in advance!

⟐ Commented 7월 25, 2026 at 7:11 GMT-7

⟐ Commented 7월 25, 2026 at 4:07 GMT-7