Help fix my computer please?

Question

i have windows xp emachines computer when i turn it on nothing shows up on monitor it just keeps beeping over and over till i turn it off how i fix it

Answer 1

its an internal error you  need a new hard drive

Answer 2

Your motherboard manual will explain what a series of beeps means.  Some beeps mean bad memory.  Some mean no hard drive.  Some mean no video card.

No one can "diagnose a series of beeps".  The exact sequence will explain the issue.  Record the beeps and Google that result or look it up in the motherboard manual.