Was having the same issue, and this is what fixed it for me.
Find the Originsetup file on disc 1 in the D:\Autorun\Origin folder, not the Setup file in the main directory and double click that bad boy. For me it said that I would be installing an older version of Origin. I said Ok. After it reinstalled Origin, I put the install disc back in and hit autorun, then clicked the continue button. It opened Origin and logged me in and proceeded with the install from the disc.
Hope that works for you. Looks like there may be multiple ways to fix it from the answers on this thread.
nope didnt work
