Thanks Andre. For the latest trace this is what I did: Scanned the disks - no errors Uninstalled Elby Clonedrive Uninstalled Catalyst Control Centre and installed only the video driver Disconnected USB drives Set Autologon The boot is much quicker, obviously due to the USB drives, as when they are connected I can hear them spin up and down during the BIOS boot and again during Windows loading, but the delay getting to a usable desktop is still there. Latest trace here: https://skydrive.live.com/#cid=E92D72B8036206DE&id=E92D72B8036206DE!112 Any further suggestions gratefully received! UPDATE; As you had identified Windows Search and Avast as taking a long time to start, I tried disabling each in turn. Disabling Windows Search made no discernible difference, but disabling Avast got rid of the horrible delay and sluggishness for those first few minutes after logging on. It seems some other Avast users have reported the same problem, so I guess I either wait for an update to Avast or try another AV program. Thanks for your help Andre and if you do have any other suggestions please let me know!