Your onboard graphics chipset most likely has no RAM of its own, so robs a region of the system RAM for itself - in your case 64MB.Sometimes this amount can be changed in the BIOS, e.g. from 16MB-256MB. Thanks for the input, yes it is the graphics chipset, and i did change it gaining more ram... Only advice I can suggest is to check for device & chipset drivers before installation so you're ready to roll, or at least are aware of which things don't have Vista-specific drivers for. And i checked, and all my hardware is supported just more ram... True on that point, but i have a modified version of vista that runs great on my desktop that has 384mb ram... so im not worried... Maybe he can`t answer, cause Vista is installed since yesterday - but still booting... And as far as your post, thank you all knowing one, but my xp installation wouldn't boot for me and i had to fix it...