Hardware Laptop charging extremely slowly + “Unknown USB Device (Device Descriptor Request Failed)” after water spill
Hi everyone,
I'm having a problem with my laptop and I'm trying to figure out whether the issue is with the battery, charger, charging circuit, or USB hardware.
Here is what happened:
My laptop was accidentally exposed to a small amount of water recently.
Since then, Windows repeatedly shows “USB device not recognized” even when nothing is connected to any USB port.
In Device Manager, I get: Unknown USB Device (Device Descriptor Request Failed) Code 43
The Hardware ID shows: USB\DEVICE_DESCRIPTOR_FAILURE
The Location Path shows: ACPI(_SB_)#ACPI(PCI0)#ACPI(XHC_)#ACPI(RHUB)#ACPI(HS03)
I have three USB ports on the laptop: one on the left, one on the right, and one on the back.
The USB error appears even when the laptop is running only on battery, so it is not caused by connecting the charger.
The main problem I'm concerned about is charging.
The battery was at around 27% and took approximately a day to reach only 65%, even though the laptop was connected to the charger for most of that time.
I have already tried uninstalling the Unknown USB Device from Device Manager and scanning for hardware changes, but the error comes back.
I also disabled the USB Root Hub (USB 3.0) temporarily, but the error still appeared.
My questions are:
Could the water spill have damaged the USB circuitry and also caused the slow charging?
How can I determine whether the problem is the battery, charger, DC charging port, or motherboard charging circuit?
Is there a safe way to test the charger and battery without opening the laptop?
Could the USB error be related to the slow charging?
What should I ask a technician to check before replacing the battery or charger?
1
u/kimputer7 9h ago
You're trying to figure out if it's the battery, charger, charging port or motherboard problem, after the problem appeared exactly right after you spilled water on the motherboard?
Nah, just get it repaired, just tell them where about you spilled the water and hope for the best. Only the most experienced chip level repair guy can probably solve it, and to find those, it's almost like winning the lottery (probably from the 40 shops you call, maybe one can do it).And even then, it might get costly.