Hi,
This may be more of a Windows problem, but I've had some good advice here before.
After waking up from sleep, my Inspiron 7720 (17R SE) automatically reboots when on battery power. I can unlock my laptop, move the mouse on my desktop for a few seconds, but then the fan starts becoming loud, the mouse pointer disappears, and it decides to restart.
This started happening after one of the Windows 10 updates( not sure which one).
I updated all my drivers and BIOS, didn't help.
I actually had this problem when on AC power too, but it stopped happening. Not sure what fixed it exactly; I changed the sleep settings so that might be it, but when I restored the defaults for my power plan, the problem didn't come back.
Thanks,
Bilal M