NPC, weapons, vehicles and entity icon problem.

I just downloaded garry’s mod today, everything was working fine without any problem but after few games it got buggy. Now when I start the game all icons are missing (only prop icon are there) but icon like NPC,SWEPS,vehicles and entities are missing. Sometimes few icons appears but after restart they are gone. I tried to verify integrity of game cache it didnt work so I reinstalled the game and it didnt help either. Please help me. Thank you