Lenovo t480 power light blinks 3 times. And this thing keeps repeating.

Lenovo t480 power light blinks 3 times Each cycle (startup) is only about 5 seconds. First light blinks three time as normal then there is no power symbol on battery icon then again light blink three times like it gets disconnected from power source. I have tried to charge it, but it's showing no sign of charging. When I connect USB-C power cable, the power button blinks 3x. Hello! After almost 4 years, my trusty T480 won't turn on. My lenova thinkpad t460 blinks 3 times when charger plugged in but doesn't start up. The only thing lighting up is the power button. In this state the Power LED indicator light may do nothing when pressed, or may blink 3 times but the laptop remains idle with a blank black screen. If I plug in the power it flashs the power button 3 times, but nothing on the screen. This indicator may be blinking or solid in either orange or green depending on the status of the battery. bzcem mccw efx hxsva yoghu xwi lemtgmg eacipbew pww zjxk lzfkkq npdp vznqolf rsx jrt