My laptop gets off when left for a while and then I am not able to switch it on

[Kajal15]

I have hp Envy x360 laptop, my laptop gets off when I leave it for a while and then I am not able to switch it on. This has happened to me 4 times. At first it switched on after a few mins, second time I got help at hp support, third I got help from a shop and it's the fourth time. Nobody is able to tell the reason or the exact way to switch it on.

[WAWood]

@Kajal15 

Newer laptops with Windows 10 come with a new form of hybrid sleep enabled -- and that causes a lot of these problems.

Win10 has enabled a new hibernation process known as Fast Startup -- which is enabled BY DEFAULT. This is different from Fast Boot, which is a BIOS/UEFI option.

Fast Startup is supposed to dramatically speed up the booting process, but in some PCs, it actually slows it down or causes it to hang. It's also a new form of hibernation known as hybrid sleep -- and this causes battery drain to maintain the state of the PC while turned off.

Disabling Fast Startup might fix booting and shutdown problems.

There are two ways to disable FastStartup in Win10: (1) through the Control Panel, and (2) through an elevated command prompt.

Control Panel - Open Control Panel --> Power Options.
Select "Choose what the power buttons do"
Select "Change settings that are currently unavailable"
At the bottom of the Window, under Shutdown settings, uncheck the box regarding fast startup

Elevated command prompt - run the following command:
REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Power" /V HiberbootEnabled /T REG_dWORD /D 0 /F

In both cases, reboot Windows.

NOW, FastStartup is disabled.

See if that helps.