4 small lights on front of HP ElieBook 840 1.. #3 & 4 are constantly blinikHPng. why?

[Polcat]

I have Windows 10 in Microsoft Edge.  Microsoft updated computer this morning.  there are 4 little lights  on the bottom, front portioFrom left to riight on of my laptop.  from left to right, the third light has been bliking a bright yellow from this a.m. until about 15 min. ago when my comuter shut down  when I turned it back on, the light is ow a solid llow.   #4 is a tiny, blinking white.  I downloaded HP Assistant and am fed up with it.  5 hours and noting including being able to write to support for help.  Finally started too find out ow to remove program and this page popped up.

That''s the only reason why i have not uninstalled.  also,since  Microsoft updated periodically I have not been ale to get typing to print in screen.

#3 is solid yellow and #4 is a tiny  Can anyione tell me why I have had these problems.  One more  problem, Microsoft constantly freezes up and says Microsoft  Edge is not responding.  the time gets longer andlonger to clear off.  Im wondering if it could be a setting n the computer?

I am not a techie so please speak English if you respond.  This page cameup when I was clearing off compuuter.   I will hold off on uinstalling program til I see if I can get an answer and crrect problem.

[banhien]

@Polcat 

Are they on the front as shown

                 

You can see what do they do as above.

Regards,

[Polcat]

If you can see the experts response below this (banhein)   He has the top of the computer with lights.  I consider the front bottom of the computer the edge .  The lights I'm talking about are on the bottom  ,front,  left side.

As you look at the computer drawing below.  It has an area on the bottom far left thatloks about an in. long and is oblong.  that is the 4 lights area I'm talking about.