1 short: the system starts properly, which we hear every day, but also that machines without any problems. 2 short: General error, please enter the CMOS Setup, reset the incorrect options. 1 long 1 short: RAM or motherboard error, try for a memory, if that does not work, had to replace the motherboard. 1 long 2 short: Monitor or display card error. 1 long 3 short: Keyboard controller error, check the motherboard. 1 long 9 short: board Flash RAM or EPROM error, BIOS damage. For the block Flash RAM try. Continuous sound (long beeps): memory is not seated or damaged. Re-insert the memory, if that does not work, replace only a memory. It kept ringing: power supply, display and graphics card connected. Check all plugs. Repeat short ring: Power problems. No sound No display: power or motherboard problems.