Model of your laptop? An SKU would help two fold. If your laptop has an external removable battery, remove it and power off of the AC power input. What was the last thing you were doing before the issue cropped up?
MERGED QUESTION Question from tarpeymaura : "I have trouble with my assus its not displaying the screen"
tarpeymaura :
It says reboot and select proper or
Insert boot media in selected boot
Device and press a key_
tarpeymaura :
Please give me an answer
To this problem.
sizzling :
Please give more detail. Is this a new build or a new problem on a previously working pc? When did it start, what did you do prior to the problem? What have you tried?
There is no operating system or the disk is not recognized. Check in bios if the disk is present, if it is then reinstall operating system