I'm having a problem with TF2.
After the "Preparing to launch window" it doesnt launch.
Instead it pulls up a "verifying window" and when its done with that it doesnt work
Things i have tried to fix it:
(btw this happens with one other game of mine as well)
i see no one has had this problem... sigh
have you try deleting ClientRegistry.blob in steam folder and restarting steam?? tends to fix file loading/updating/verifying problems
Um do you have Vista?, if so 64bit or 32bit?, you might need to run the game in 32bit mode because it sounds like the same problem i had with HL2!
try running it in windowed mode, and then hitting alt+enter when it loads.
right click game > General tab > Set Launch Options > type "-windowed"
Did you recently update your video card drivers?
New Steam client update also