I had similar symptoms once after changing intel amt settings on an x201

I have a similar issue on my x201, hibernating doesn't start sometimes after sleep when on battery, sometimes it "windows error recovery"s on restart (and i think can poweroff at random too). Not sure what the direct cause of all that is, but I have found disabling wake timers in the bios prevents t...

I get that too, but what is on pci express in an x201 that draws power or is it just the bus?

I have this too and I'm trying to debug it, perhaps we could isolate any potential causes in common in this thread. I have an x201 2x2gb win7 64bit stock but with an intel SSD, and get the "Windows Error Recovery" screen typically after the pc hibernates after sleep when on battery power - but not e...