hl2.exe

my hl2.exe crashed and was wondering if anyone knows the steps of how to uninstall steam and reinstall it?

 

Does it crash everytime you launch a source-engine game?
You might want to look at the game cache.
Go into Steam Library > Right Click CSS or TF2 depending on what game makes you crash > Properties > Local Files > Click Verify Integrity of Game Cache
If this problem still occurs, then I have no idea what could it be other than a bug in a map/mod, which is quite possible too.

 

Have you considered going to the steam support page?
Google it.

 

Go steam library find the game you want to delete, right click, properties, click on Local Files, delete local game content, re-install the game. Another way to delete..locate the game folder(I'm assuming your talking about tf2?) C:\Program Files (x86)\Steam\steamapps\common\Team Fortress 2 delete it.