To do this properly I need to know which model your computer is - is it an eMachines MB.NBK09.003 Motherboard El1850 Desktop S775 G41T-Ad ? I need this to try to establish the BIOS seller and version. You might try finding the BIOS version by (continuously) tapping the F1, F2 or esc key (or possibly another)immediately after you turn on. The "splash screen" that appears aftrer you turn on may have some lettering which tells what key to enter the BIOS.
In the absence of this information here are two suggestions
EMachines that beeps constantly and won boot up
if it is the above it is serious and the computer will need serious (difficult) repair, or main board replacement or whole unit replacement (by which I mean new computer)
The other suggestion was about the RAM not being properly in place, but I doubt this as this usually gives a different beep code
19.January.2016
×