New PC screen hurts eyes?

Hello there

Recently about to months ago ive got a new LED 24MP76 and even from then my eyes hurt from it even on the lowest brightness and contrast settings

some friends came by and also they told me that the monitor hurts theyre eyes after 15 minutes of using the computer

noew my computer is getting fixed and im using my bros computer and he has an ENVISION LED 2473w

screen and ive recognised its also a LED MONITOR and also this monitor realy hurts the eyes after about 15 minutes and it gives a realy anoying eyestrain on the lowest settings maybe u can give me an advice on how to fix this because i ussaly use my computer for about 1 hour a day and on the first days when i used this computer everyday i was about 3 minutes on the head having headeches from the monitor

and thank god this monitor doeswnt make eyestrain like in the begining but still it hurt the eyes very much when im on the internet on a white page,and it realy gets me anoyed and a friend told me that i need a new monitor maybe u know how to adjust it so it wont hurt so much