Command and Conquer Generals and zero hour download problem

Hello dears,

I downloaded "the ultimate collection" last year on Origin. I played a bit, then my hard drive got damaged so i had to change it. Now after a while i downloaded Origin, and tried to download Generals and Zero Hour from my library on Origin. The download completes, and at the end at finalizing phase it gives an error that the download has failed. i tried re install of Origin, and downloaded game multiple times but in vain. Can someone assist me?