ok here it is,my sister gave me her old compaq presario 5430,has a k6 something 400mhz cpu...i noticed it running very poorly and wasnt sure why, then i looked in device manager at ide controllers and both are set to pio and the tab to change them to dma is greyed out.i poked around in bios all the right stuff is enabled like ultra dma or something like that,is there anyway to enable dma in this pc?i had jus formated and installed win xp btw...thanx for any help