OK...this is what I would do
. This is just grasping at straws.
First...take a look at the drive connections and make sure that the jumper settings are correct.http://www.ehow.com/how_6031_change-master...esignation.html
After ensuring that each drive has the correct settings, I would go into Disk Management and make the following changes.
Change letter assigned, D: to X:.
Change letter assigned, I: to Y:
Change name of Admin (F) to Admin 2, leave letter assigned alone.
Change letter assigned to 1st CD-ROM from G: to D:.
Leave H: drive alone.
IMO, your partition lettering/naming is a bit scrambled. I'd like to say that it makes no difference, but I do know that some problems can occur when D: is anything other than an optical drive...and two different partitions should never have the same name.
Make the changes in the order that I listed them.
Once that is done, reboot your system.