So I was bored and I tried to go assassin on all of the guards in Solitude and then one day, they didn't respawn anymore. I tried to spawn them via console but it doesn't do the trick they just stand on where I spawned them. I went inside Castle Dour where the city guards slept and only that guy named Istar Cairn-Breaker was sleeping! All other beds were empty. I spawned some in the room and all they did was sit and stand around looking at each other. Any help would be appreciated! CHEERS!
Have you tried the 'resurrect' command? Using this command brings any NPC back to life. To do this, open up the command screen. Then click on a dead guard so it will show his model number. Then type resurrect then their model number (i.e. resurrect 10248190). They should come back to life. Hope I helped
Without the guards Solitude is really lonely, with only a few npcs about 9 only. So this is what I did, I downloaded a mod that adds more npcs to cities from the nexus. Another thing to fix the guard problem, I downloaded a dawnguard city guards with the dawnguard trolls and wolves. So the latter replaced solitude guards with Dawnguard soldiers. this is the link for the latter mod http://www.nexusmods.com/skyrim/mods/60568. Thanks for the help anyway! cheers