I have Windows XP Home, with the power option set for monitor shutdown after a designated time, and standby set for a later time. When I tried to "revive" the computer, I was presented with a screen (never seen before) stating "Windows preparing for standby." There was no response to any keystroke, nor would the cursor work. After waiting for a minute or so wherein nothing changed, I shut down the computer. On boot, I was notified that neither HDD could be located. In Setup, both HDD's where listed as "not installed." Several reboot attempts produced the same results. Using the Windows reinstall CD, I went into Recovery Console (using it for the first time) and I noticed that drivers were automatically loaded. I ran the chkdsk command to verify the health of the system HDD. and then rebooted. The computer booted normally, and after log-in I used the device driver and verified the drivers for both HDD's. So far everything seems to be back to normal. Not fully understanding what happened, I have set the power option for standby to "never" for the time being. Question: Does anyone have some idea what was going on? Is there anything I need to do to prevent a reoccurrence? Any suggestions will be appreciated.