In the games main menu towards the bottom should be an add-ons (can't remember exactly whats its called) section it'll tell you what dlc the game thinks you have installed. In game to see if Hearthfire is installed cheak the general merchants for items like childrens clothes and straw or any items from Hearthfire. With Dawnguard once you hit level ten the Dawnguard and Vampires will come and find you or at any level look for Dayspring Canyon.
Just in case to add the dlc the installers are under the game disk in the game section of cross menu i would install in the order -
Game install/patch - Dragonborn - Hearthfire - Dawnguard
Im having the same problem the dlc for skyrim will not show up in game at all. I've been all over Google looking for an answer all anybody seems to say is below the icon too start the game but there's nothing there just a file with bonus content for the god of war collection, nothing about skyrim.
I have a problem where the downloadable content is not showing up, i searched everywhere but can't find the answer, either it wasn't related to the problem or it would say how to download dlcs. Plz help
I assume that you have already tried restarting and then downloading. Make sure the Internet connection is working, then if all is well after turning off the system. If all else fails, you might have to uninstall and then reinstall the game to fix the issue.