Twist wakes up and kills battery

Question

I just received my Twist back from service and I have a new problem.  I close the lid and it goes to sleep, and all is well.  Then at some point it "sort of" wakes up and the fan starts running.  It will do this, throwing out heat until the battery goes dead.
If I happen to open it before the battery goes dead, the red light will be pulsing like it is in sleep mode.  But it won't come out; not even after pressing the power button.  The only option is to hold power down till it shuts off, then back on.
Here's the interesting part; there is nothing in the Event Log about this.  I've had similar problems before where a device was errantly waking the computer and you could see the history of it in the Log.  For this problem, there's nothing in there.  It isn't windows that's doing this.  Could it be a bug in the new (Nov) BIOS?  This is obviously a big problem.
Solved!
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Answer 1

Hi,
Here's my guess:  it's waking up based on a timer and then hanging when trying to hibernate or enter 30-day standby.,  Could be  a problem with the cache SSD or how it's configured.  Or something else...
You can try disabling hibernation in advanced power options and/or disabling 30-day standby in Lenovo Settings.  Not a fix, but it might help diagnose the problem.
Z.
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