I was testing out my J50C-4 with a 12v lithium battery to see how long it could power the PC. After the battery inevitably died, I can no longer power up the PC from any 12v source. It still powers on fine with the supplied AC adapter. When I plug in the AC adapter, the LED blinks red (4 times?) and can then be powered on. When I plug in a 12v source, the LED doesn't light up at all.
Any suggestions would be appreciated!
Any suggestions would be appreciated!