Howdy. I'll try to make this to the point as possible. Please excuse the long explanation. Recently, when my computer goes into standby, my secondary hard drive disappears when the computer reboots. I searched all over and have tried a few things to diagnose the problem. The drive is on an IDE cable and when I swapped the ide cable with the dvd rom drives, they disappeared. The connection is to the secondary IDE connection on my motherboard (I have two connections). I know the cable is good because I used a different cable with same results. I also made sure I had the latest bios. The most recent change I made is added a raid0 as the main hard drive which I boot from. I just recovered from a hard drive crash. I'm not sure if that is related. I also get this message in the system log... The device 'Lite-On LTN486 48x Max' (IDE\CdRomLite-On_LTN486__48x_Max_________________YD01____\6&2193ede4&0&0.1.0) disappeared from the system without first being prepared for removal. The message is the same when the secondary hard drive is plugged into that connection. I also hear from time to time a "click" from one of the hard drives in the machine but don't know which one and chkdsk shows no errors. You don't think my motherboard is failing? Hope not, it is only 5 months old. I have Asus p5w deluxe mobo. 2gb ram. Dual maxtor 160gb raid0. Maxtor 300gb secondary hard drive IDE. Windows XP 32bit. Most recent bios update from Asus. Intel duo 6400. Nvidia 7600 video card. Any help would be much appreciated.