Its happened in the past , never as bad as this.
Started as it did last timne a while back were incessanht "Not responding" got so bad I had to press power button and it didn't have the modern version of the hour glass - the turning circle. I left it and went back an hour later still just the Gigabyte screen no turning circle. Then after many attempts it actually appeared - 12-15 minutes later it seemed to have went to pass screen - only the screen was black, but the mouse cursor was moving. Gave it time - nothing
Have tried several times since and nothing.
Is there a way to get the damn thing to boot ?