I am trying to install Tribunal, but it freezes at 86% (while updating the file Morrowind.bsa).
I have successfully installed Bloodmoon, and am trying to use the Game of the Year Edition (cds) from 2003. I used them on another computer without a problem, but on this computer (Toshiba Satellite L755, Windows 7 x64) it has this issue.

How long did you wait while it updated the file Morrowind.bsa? It can take a very long time, that it seem freezed is normal. You just need to be very patient.

Also, you must always install Tribunal before Bloodmoon. So if you installed Bloodmoon already, you need to reinstall it after you installed Tribunal.

Well, after a while, a message came up that said:
Component Transfer Error
Component: Data Files
File Group: Data Files
File: D:\data2.cab
Error: Incorrect Function.

Yeah, that's not supposed to happen. I would guess that either the disc is dirty or the laptop optical drive is very sensitive or something, seeing it worked in your other computer.