Hi all. I'm working on a computer for a friend. I'll start with the specs Emachine t2682 Celeron D processor, socket 478 3.0 ghz 256 mgb ram (I think I just heard a few groans upon reading 'emachine') Here's my general question and justification for asking it: The comp was handed to me, saying it was not working properly, pretty vague I know. I boot it up, it boots win XP and has a few pop ups, takes about 20 minutes to get beyond the first start up pop up on the win desktop. At that point I restart it, and am met with a boot loop. Emachine logo ---> black screen--->pause--->emachine logo wash rinse repeat. So my initial thought is 'oh well it's the HD' so I order a new hd. Plug in the HD...nothin, says there's a 'disk 01 not found' type of error. Upon reboot it just flashes the white underscore on the black background. So I'm thinking it must be the motherboard. To process of eliminate that I remove the emachine's processor and plug it into a dell optiplex, which I know works fine because it's what I generally use to cross check parts. I also put the emachine's ram into the dell. So with the emachine processor and ram everything boots fine on a hardrive I had originally in the Dell. Both are IDE drives so I though maybe I should take the Dell's cpu and put it into the Emachine, and also try the Dell HD in the emachine. Through process of elimination I found that the cpu from the dell would not even boot, whereas the orginal emachine cpu worked in both systems. The hardrive on the dell would not boot on the emachine: it would give a message asking me if I wanted to start windows in safe mode, regular, ect; and upon selecting a prompt, it would flash a blue screen faster than could be read and reboot and go back into boot loop with the 'how do you want to startup?' message. I snagged half a picture of the blue screen using my camera phone and it revealed that it was an dskchk / f error message, which I thought was odd since the Dell HD disk that was doing this was damn near new. Upon plugging the Dell HD back into the dell and booting I was treated to a dskchk /f automatically through win xp's startup. It said everything was fine and booted to XP just as well. I went on to check 4 different hard drives I had laying around, all gave some various form of being unable to boot. I then checked a drive a friend had given me with a copy of ubuntu on it, I booted it on the dell to see if it would work. It didn't, but I attributed that to the Dell not having the linux kernel that Ubuntu operates off of (so I'm told). I then reformatted the drive using an external and went through the win xp install disc process. When the install finished it rebooted, didn't find the drive and started the cd back again. I thought maybe it was the motherboard and I replaced the battery on the mobo just for laughs. Wasn't that. I replaced the IDE cables just for kicks, still won't boot any hardrive. I cross checked other sticks of ram, no go. I reset the cmos clear jumper on the mobo hoping maybe that would do something, no success. I see no bulging capacitors or burn marks on the mobo that would suggest a burn out. I can access the bios fine, I can get it to POST the first stage but no more. The bios shows the drives as being read (the drives it says it can't find). If you pull out the ram and try to turn it on it'll beep angrily at you, which is the only way I know to test if a mother board's lost to us. I'm at my wits ends guys. I dunno what to tell my friend. No clue whatsoever.