Going to give control to INT 19H boot loader

Hi guys,

I need your help. My sister have a problem with her computer. On friday night it was working fine when she turned her computer on before she went to bed. The next day it start to stop working. There are no beeps noise when she turned it on. The leds light ain't working. I have removed the battery from the motherboard for 30 seconds before I put it back on. Still get no beeps.

I have unplugged the power cables from her hard drives and dvd drive, still get no beeps. I have tested my PSU and memory on her motherboard which i have got the same motherboard as she has got, still get no beeps.

I have plugged the analyzer card on the PCI slot, when I turned it on I saw the error code which it is 00.

I have looked on the book and it said: (00) Going to give control to INT 19H boot loader.

I don't understand what it does means. Can you please tell me what it does means and can you please advice me what I could do about it to fix the problem?

I have no knowledge and I never have that experience ever before.

Any advice would be much appreicated.

Thanks in advance.