Hello, I have a MyBook Essential 500GB USB that I bought a couple years ago when all my systems ran Windows XP and I have NEVER even had the slightest issue with it, until Windows 7 rolled around. (Issue also present in Vista)
I ran all of the betas and ALWAYS had an issue where if the MyBook was connected and powered on, Windows would take a ridiculous amount of time to start the USB bus. If the drive was powered off, no problem. Boot times were fine and USB started immediately.
What happens is (with drive connected and on) if I restart the computer, none of the USB devices are useable until about 1-2 minutes after Windows is booted. This a huge problem as I have a USB mouse and it’s useless on the logon screen until Windows starts the USB bus and hence, the MyBook a couple minutes later.
If the MyBook is unplugged or powered off, Windows 7 boots normally and all USB devices function as soon as the logon screen is showed.
What I have to do is power off the MyBook, restart then power it back on if I don’t want a big delay in starting all of my USB devices. This is clearly less then optimal and I’m not going to deal with it. Once Windows has booted and the delay is behind me, the drive functions fine.
It has nothing to do with the BIOS, Legacy USB options, USB boot, etc. This single problem is what kept me from ever upgrading to Vista/7. Now that I have a new system, I’m pretty stuck. None of this was ever a issue with XP.
There’s posts all over the net about issues like this but absolutely no fix whatsoever.
Any ideas or do I have to trash the drive?