I recently recieved a Dell Optiplex GX520 computer with Windows Xp Pro Sp2, and I connected a Western Digital My Book 1TB External Hard Drive,
Everything worked fine until 2/19/10 When I installed a new video driver. I started seeing "Windows-Delayed Write Failed" messages. I tried a solution that I found online it didnt work. My Brother-in-Law suggested that I go into the policies tab and changeing the setting from "Quick Disconnect" to "Opimized for Performance" when I did this, the computer promted me to restart the computer, when Windows restarted I found that the computer could no longer see the external hard drive. I tried to perform a system restore but recieved a message: The Changes To Drives N:/M:/L:/K: cannot be reverced because the drive has been excluded from the computer. i would be greatful for any help. Thank You