CoreBook X 2020, It only turns on if the battery is disconnected and reconnected

Hello,
I have a CoreBook X 2020 i5-7267U. I stopped using it for a few months and now even charging the battery for a full day does not turn on, the laptop only starts if the battery is disconnected, discharged by pressing the power button several times and reconnected, is the only way, neither starts with the battery disconnected and the cable connected, nor by Usb-C (Using cable and charger 140W), nor by the official charger.

I suspect that it may be something related to the bios or the motherboard itself, since it was not even possible to detect the load by type C, and when in the bios I activate it, sometimes it saves it and sometimes not. It also sometimes makes a loop in which it takes quite a long time to boot, it restarts several times, even without showing the Chuwi logo.

It is very likely that a bios update will help with this, I will pass on the data for the version I have:

Bios Vendor: Chuwi
Core Version: 5.12
Compliancy: UEFI 2.7; PI 1.6
Project Version: SKLU 0.01
Build Date: 10/13/2020
Bios Version: JXX-BI-14-WU133SR200-SE9
0A-042-A
CH-EC-V1.1.4

CPU Name: Kabylake ULT
CPU Type: Intel Core i5-7267U
ID: 0x806E9
Stepping: H0/J0
Microcode Revision: B4
GT Info: GT3 (0x5927)

IGFX VBIOS Version: N/A
IGFX GOP Version: 9.0.1095
Memory RC Version: 3.3.0.0
Total Memory: 16384 MB
Memory Frequency: 2133 MHz

MRD PD Version: 00
ME FW Version: 11.8.70.3626

I hope that with this data, you can send me the bios update file so I can flash it. I would appreciate instructions of the procedure for your motherboard, I don’t want the pc to be dead,

A greeting.

I’m pretty sure it’s not the battery, I have a gemibook battery here that is the same and when I plug it in I have the same problem. The battery charges well and is detected by windows, the problem is that once the pc is turned off it does not start anymore if the battery is not disconnected, unload the pc of electricity by pressing the power button several times and reconnect the battery, only then it turns on. This smells more like motherboard, I’m pretty sure that the motherboard fails.
In addition if I have to buy a battery the last place where I would buy it is where you recommend me, after seeing the garbage of batteries that you mount… In addition expensive, you have no shame.

This looks like a hardware issue. Contact support@chuwi.com and share your device serial number with them. If there’s a BIOS update (Chances are low) they can share it with you or advice further.

It was the first thing I did, and unfortunately they already confirmed that the bios that my pc uses is the latest version, that at most they can give me the same…
I’m pretty sure it’s because of the motherboard, something in the electrical system is failing, it’s not able to detect when the battery is connected once it’s turned off.

The laptop has been used months, since it was bought, because its owner had it a long time in storage, I was hoping to give you good news, but I guess we will have to take the pc to a specialist who will check the board, I’m out of ideas.

If someone helps me I have a tester and some knowledge of electronics, I could try to check to be closer to the failure.