I have 5 E540 touch screen and 2 regular E540 Thinkpads that all are shutting down at various times. If I remove the battery it seems to cure this disease. I have brand new batteries and a couple original batteries so I don't believe it's the battery. I monitor the temperatures and they aren't near hot enough to trigger a shutdown. I've done the removing battery, charge cable then pressing the power button and this doesn't change anything. I've updated the BIOS with still no success. I've change the power settings including setting the processor to 100%. Still nothing doing. I've also installed the latest Power Management software and this does't seem to help either....... So what's going on? Does anyone have a solution. I purchased these laptops, upgraded them all to more RAM and i7 processors for resale and I cannot sell them in this condition. BTW, I checked one unit with the standard i3 that came with this model and it does the same thing. It's definitely not the processor exchange and I cannot believe that all my motherboards are defective. Again, What's going on??? My last guess is maybe it's a Windows 10 glitch.