I have removed the hdd and ram modules, but I still have the 1-2-2 beeps and nothing more ...
maybe i could try to disconnect one by one every peripheral and see what happens
or I'm hopeless?
my acer aspire 5920g is stopping on boot whit black screen and it does 1 beep, then 2 other beeps, then 2 others beeps; on phoenix beep codes page i found :
"1-2-2 DMA failure The DMA controller has failed. Replace the IC if...