Hi, the last time this happened to me, it was because the battery had died and lost the settings in the bios. Try starting the pc and entering the bios to see if the hard drive is being detected. (should be on the first screen). Make sure it's set to auto and save the settings. If this works, you will know the battery on the motherboard needs replacing. The drive should be recognised until the computer is turned off again and then the same will probably happen until the battery is changed. This is the most obvious reason for what has happened, but it may be something different. I like to go for the obvious things first. HTH Michele Sayer --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.658 / Virus Database: 421 - Release Date: 09/04/2004 Do you want to signoff PCBUILD or just change to Digest mode - visit our web site: http://freepctech.com/pcbuild.shtml