Hi Abmhos! I'm having some computer troubles too as the moment and I know how it feels to have your computer break on you
so I'll do my best to help out!
What kind of computer do you have? Can you list the specs or a model number if the system is prebuilt?
Also, when your computer is trying to boot, and you hear the beep, do you ever hear any other beeps and/or does the beep go for a longer period of time than normal? Commonly, PC systems use beepers to signal different types of problems with your system. Your manual might say something about different codes signaled by that beeper.
Good luck, hope I helped...maybe a little
Best regards!
- BHogervorst