We have a number of E7440 laptops here, all running W7-64 Professional. Recently I've updated a number of them to BIOS A14 and installed the latest drivers (early April-ish). Since then I have a few users complaining of the screen going dark and being nearly impossible to wake up. I have read through a number of blank-screen threads here and I'm pretty sure the laptops aren't stacked and the users aren't wearing a watch with a magnetic clasp. I'm wondering if anyone else is having trouble just recently with black/blank screens.
Putting the system in/out of a dock and hooking up and external display does not resolve the issue. The laptop doesn't appear to be sleeping (pulsating power button not present), it seems to be on but will not wake up no matter what keys you press.
Sometimes closing the lid will make the display light up just before it closes, then it goes to sleep... but then when you open the lid it 'wakes up' but stays dark. It's not consistent, and happening on more than one machine.
Anyone else?
Thanks, -Derek