hi there, this is more like a general hardware question. my computer: MB: P4S8X CPU: P4 2.5 GC: Ati Radeon 9700 non-pro latest drivers ( catalyst 4.1 ) SC: Creative Sound Blaster live 2 player Speakers: Creative Inspire 6.1 Ram: 512 HD: Ibm Deskstar 120gbx 80gb Power Source: 350W this problem happen on my both OS's Windows XP and RedHat 9 on separated partitions. 1: sometimes both OS's dont recognise the sound card. its just like it isnt there. in linux whenever i try to play a dvd the sound cames out from the speakers like "bumps" (sorry the wrong expression, but im not that good in english ). 2: in the last couple of months the power source makes sometimes a very strange large sound like a motor bike (but not as loud). 3: the hard drive makes a loud cute sound, that it didnt make at the beguining. 4: MB and CPU are allways about 50º of temperature (celcius). the entire computer has about a year now, so it is rather new, but are all these problems due to the power source? i mean, maybe if i buy a new one with more power (say 450w or somethin), would it solve the problems? thanks in advance. PS: sorry the bad english.