@todesto thing is if my memory ain't that bad, MoBo graphics are ati hd 4450, will leave it at last option tho.
@nightf4ll i'll try the jumper settings (i got an ide rom), and about bioses ACHI thing is i've looked everywhere and i still can't find where to set it to native mode, on SATA config only shows IDE RAID and ACHI modes to config, that's all.
@hans88 im using a SATA disk, tried on 3 different ones in fact current device is a 1TB HD, tried on a Barracuda 160 GB and a WD caviar 1200 as well.

Thanks for the tips everyone i'll get to work on it, and let you know if i succeded