Did the procedure twice. No luck, same behavior each time. It powers up fine, and seems OK, video works but no audio. Then it starts to get hot. Battery shows 1%, but then start something like Safari and it may show 24%. Or 32%. Then within 2 minutes, back to 1%, BSOD and it reboots. I wonder if the battery is bad? Looks like the end of the road for this one.