what do the beeps mean?

I have just replaced two power supplies in 2 old identical computers at my school. One had just died and the other would keep rebooting (another school has found his to be a p/s issue)

The dead computer came alive fine but the one that was rebooting prior to the change won't start properly - it gives two short beeps followed by 6 normal ones and then nothing happens and there is no display. I have rechecked all the connections and have ensured that nothing has been dislodged.

I am considering swapping the p/s's over to see if that is the issue but these pcs are small and difficult for my big hands to work with so I am not rushing into that - plus we have another rebooting machine to be looked at -so i can try the p/s in that one next week.

I am wondering what those beeps might mean. Maybe the mobo is terminal!!

Thanks

PS - apologies if this is posted inthe wrong place.

Check this guide : Special Topic Bios

Thanks - interesting reading - I was actually wondering if there might be two problems - one re the two short beeps and the other connected with the 6 normal beeps. I cant get into the bios as there is no display. After the beeps there is no significant activity from within the pc apart from the fan!!

There is another one here

Hmm - a bit beyond me - looks like I have to put this one in the too hard basket for now!

Thanks
:-B