Every time I want to log on to steam and play any of my games, steam won't start. Except when I first turn my computer on. I can click on steam and it will start and I can play my games just fine. The I come back later, say 2 hours, I click on steam icon and nothing happens. I have to go into task manager and turn off/close the steam.exe process. Then click steam icon and it starts up just fine. Some times I wont even start steam at all and go to click icon and no go....but it's in the task manager running in the processes tab....so how does that happen. I've closed out steam and restarted it sometimes that works. I've un-installed steam and reboot then re-installed steam then the long process of downloading games again....that doesn't work....same problem. Any ideas.