games not running

[Hedwig]

None of my games work.
When i went on tf2 to go to blackmesa it said "Steam beta must be running"
and it said on killing floor "must be running steam"
Any ideas on what to do :confused1::confused1:

 

[metro]

Have you just tried restarting Steam and/or restarting your computer?

 

[giraffe]

EDIT: First, do what metro said, then if that doesn't work, try this stuff:

What operating system are you running?

A few solutions:

First, try defragmenting your harddrive. This can be done the following ways:

What you need to do first is check to see if your hard-drive with Steam installed on it has at least 16% of free space, preferably more. If it doesn't, free up some space. You need at least 16% to defrag.

Windows XP:

Start Menu > Control Panel > Administrative Tools > Computer Management.

From here, find the Disk Defragmenter on the left hand side. Right-click your hard-drive, and click "Defragment." Even if windows says it doesn't need to be done, do it anyway.

Windows Vista/7:

Click Start Menu, type "Disk Defragmenter," click the Disk Defragmenter option, find your harddrive, rightclick and select "Defragment."

Both Defragmentation options may take... a really long time. 4 or 5 hours, maybe more.

After doing that, restart.

Try Steam, and running TF2, and if the defragmentation didn't work, continue to the next step:

Try exiting Steam, rename clientregistry.blob to clientregistryold.blob in the Steam folder (C:\Program Files\Steam) and trying again.

If THAT didn't work, answer my original question, i.e. what operating system are you running, and your computer specs would be helpful as well.

 

[REpear]

Are you signed up for the beta steam testing? Check your steam settings, you can opt out of the beta stuff at anytime.