my hp beeps twice and it displays nothing but it will be on pls help me out

I'm taking a shot in the dark here but here is what I think is happening.
Your system is posting with an error on post. You have no display because either
You monitor/display is not working/powered on.
Your Graphics card/cable is loose/broken.

To fix this issue try reseating the graphics card/cable
if its a laptop then try an external monitor.

Let us know how you get on or supply more information.

Hi.
2 beeps (AMI Bios) indicates a memory error.
Check memory module(s) are clean and correctly seated.
If more than 1 module is present- try each one alone in the first memory slot.
You may have to replace faulty module(s).

check if the memory is well place or try memory slot if it is persist use another memory

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