I have a Thinkpad w530, love it. I took out the DVD and put a HDD caddy. Windows 7 I changed all settings related to the USB auto eject, but after a long period it still shows it wants to eject it. These days I leave the file explorer open to prevent it from happening - as the drive is "in use". What setting am I missing to prevent my HDD caddy from trying to eject when idle?