Steam Error

Having problems with a strange bug in one of valves games? try running the Steam diagnostics tool and see if it finds any problems

Update:

One of the most common it reports is that your version of Directx is out of date. This easily fixed by downloading and installing the latest version. Directx is often updated monthly and is not always part of Microsoft's auto updates.

The other common problem is outdated graphics drivers. For desktops, this is easy to fix but laptops take a little bit more work. For desktops just visit the website of the brand graphics card you have such as nVidia, ATI, or Intel. For laptops you must visit the website of the manufacturer of your laptop. The common ones are Dell, Hp & Compaq, Toshiba, Gateway, Sony, Acer, Alienware. Hopefully this list will save you some time searching.

Please report any bad links and I will update my list.