You probably still do.
Go into disk management and see if you just need to assign a letter to the HDD partition.l Just the big partition,skip the others.
Games you can probably get to work again if they used a launcher app like steam or origin. Just install Steam/Origin and add the game's location as a new library in the App.
Most Programs will need to be reinstalled. The new OS will be missing registry and hidden appdata stuff to run them.