Windows 10: This happened me yesterday and today, when i turn on my laptop it doesn't turn on

So when i turn on, it doesn't, BUT, when i close and open again, it magically boots, another cuestion, when SOMETIMES i boot the laptop, the taskbar doesn't load totally, and sometimes the CPU clock keeps on 0,39 Ghz

:)

 

the night light it doesn t turn on

i have problem with the night light it doesn t turn on what am i doing to??

[Moved from: Windows / Windows 10 / Devices & drivers / PC]

 

Windows Spotlight doesn`t turn on

Hello

I was trying to turn on windows spotlight for my lock screen background in windows 10 v1709 build 16299.125, But it doesn`t turn on. I click on windows spotlight, It changes to spotlight, But not the preview picture, Then I come out from settings, again
go in for lock screen background change, But the background is again on picture! I`ve done every thing to fix it, Nothing changed. Help me please

 

laptop won't turn on

Dell Latitude D800

few hours ago i turned the laptop off by going to start menu, shut down, on an xp machine. the computer shut down normally but now when i try to turn it back on, nothing happens for a good 30 seconds then the HDD lights and power lights come on for a few seconds then turn off.

it's weird becasue, from what i have seen, the lights usually come on right away then turn right off (in similar situations) but this thing doesn't even try to turn on for a bit. What could be wrong?

things i have tried:
-removed RAM, battery, wireless card, HDD... nothing happens
-held power button for 10 seconds with battery in and out of machine while and while nt plugged in
-Different power adapters

i am going to check the cmos battery but if anyone has any suggestions it would be appreciated.