Gimmie the model of your hard drive exactly and Il link you to it if theres an update for it. Thats only if the drive aint dead like.. I updated mine as I was constantly getting chkdsk scans ran on it each boot and the SSD with the OS was fine.
Windows 7 and Server 2008 R2 are pretty much the same, Servers are required to remain on 24/7, so Windows 7 should (theoretically) do just fine being on all the time
HHD turn off power disable , Windows 7 x64 only reboot to install some update. After that pure p2p server 24/24