Hi
After I installed the drive the whole system reacts very slow when the drive is access after not being use for a while.
I think this happens because the 1TB external HDD needs to be scanned and indexed by system after the HDD has not been used for a while…
You can try to check the Win 7 power options.
http://aps2.toshiba-tro.de/kb0/HTD12017W0001R01.htm
I would recommend to disable the power saving option for the USB ports.
Maybe this helps…