Screen won't light up

If the brake lights and turn signal lights work, then there may be a bad fuse. Check the fuse box.

Check to make sure your fan is set on the high speed & the light is at the on possition with the pull chains.

What does the owners manual say the light is for ?

It won't go off until you diagnose & resolve or
repair why it is on.

When you ask a question we need lots of detail

We can't answer every question when a light comes
on & you don't provide a vehicle,engine & all the details
in the manual about the light & the vehicles driveability issues

You have a system fault or malfunction that
need to be diagnosed in the VSC function
or that part off the system a code may point you to

Only a trained tech will have an answer to why
something isn't working & only after the problem is found

You won't know what to ask & they won't tell you if you
go to a dealer. A repair shop may work more closely
with you if your in need of knowing alot & I would suggest
you always be part of the solution & educate your self or
else do your vehicle repairs

If the other head light works ,it won't be a fuse

Check every fuse in the car,won't take long &
the fuses will protect a complete circuit,not just
a couple head lights.

The light switch has a circuit breaker not a fuse.

Have you removed & tested the lamp it'self

No owners manual? Need that for fuses & bulbs/lamps

un hook your battery for 15 minutes then retry to start

Bulbs -usually burn out, all at once,haven't you had that happen

Blue Bulbs- are illegal in most states & you asked about the most
light. Won't get that from some aftermarket fancy color gimick

So Dim Lights--that is a problem obviously
You will have to have that diagnosed,I won't guess
at it. Only visual inspection & testing will establish why their dim

this happened to me, it needs charging make sure the lead has the blackberry symbol facing up....

The HDD can go at anytime without warning, does the Asus logo come up on the screen?

I don't understand these questions

Any dash light you get is a Vehicle System
Malfunction ( no owners manual)

They have been with us for 30 years now,
still hundreds of questions a night

Study OBD2 Systems on the internet

All check lights need immediate attention

Check for Codes
Diagnose
Repair

Do so in a few days of any light on dash,they
won't go away & won't pass inspection & eventually
will end in costly repairs