I checked, and there’s no yellow triangle. It also says device is working properly. Somehow, after many tries, it detected my network, and i managed to connect. But the range was so less, the internet wasn’t even working. Then it got disconnected and again the problem of no WiFi is back. It’s same with Bluetooth. It’s not detecting my phone, and also my phone is not detecting the tablet. Have also made the tablet discoverable.
To rule out a softwsare problem you must perform a factory reset: startup, configuration, update and security, recovery, reset this PC.
Put the charger and let it finish and do not turn it off even if it seems to be stopped, it may take several hours.