Sorry for the double post, but I need to reword something. I have all the drives enabled, but the hard drive that isn't working, in the device manager it's just a grey blank where you could choose enable or disable.
I'm running windows XP. I currently have 2 HD's run off the motherboard, and I added an additional one via a card that plugs into the motherboard and runs IDE hard drives. Everything worked great, except I ran out of space. So I bought one more hard drive (western digital 160gig) and installed it. I got it formatted and it worked fine. I added it to the same "channel" of the IDE card that ran my other hard drive, just used a cable that has 2 connectors on it. Well I fought and fought and it only wants to show one of the hard drives in windows, but during bootup the computer shows it see's them both, and so does the device manager in windows, just doesn't show up in my computer or explore.
I've adjusted the jumpers and it didn't help any (tried one master one slave, both slaves). I got it working somehow for a couple days, but today I resarted (1st time since they worked) and now one of the drives is gone again. They are all formated to the NFTS format too. I don't have any devices turned off, and I'm logging in under the same (and only) username in XP.
Hopefully that made sense, if there any further questions you have to help me I just ask away. Thanks in advance for the help ladies and gents, I really appreciate it!