I have had the same problems for several weeks on my laptop, but I FOUND THE FIX!
I had attempted to speed up the Boot Time by using one of the power settings called "Fast Startup". But for this to work, it stores important system files in cache memory, so that when you shut down, the laptop doesn't completely shut down; hence the power light stays ON (and, incidentally, the Task Manager "Up Time" doesn't reset each time you shut down).
Fix: (This is for Windows 10) - Switch OFF the "Fast Startup" feature as follows:
1. Type Control Panel in the search box.
2. Click "Control Panel".
3. Click "Power Options".
4. In the left menu, click "Choose what the power buttons do".
5. Click "Change settings that are currently unavailable".
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