Removing the Intel Rapid Storage Technology software corrected the constant disk activity. However, after removal, the computer would not resume from hibernate. The computer would reboot shortly after displaying the "Resuming Windows" splash screen. I attempted to run the hibernation boot trace 4 times. In each case the computer would reboot during resume. I re-installed the Intel Rapid Storage driver (iastor.sys) alone, without installing the full software package. Constant disk activity became a problem again, but I was able to resume from hibernate. Strangely enough, if I remove the DVD burner from the laptop, I no longer experience constant disk activity with the iastore.sys driver. Disabling the DVD burner in Device Manager also correct the disk activity problem. Attached are my new trace summaries with the DVD burner disabled. Let me know if you need the full ETL's. summary_shutdown.xml summary_hibernation.xml