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Left 4 Dead crashes on Vista [Solved]

If you have played the game Left 4 Dead on windows Vista you may have noticed that on random times the game crashes with no obvious reason.
For this problem i hadn't found a valid solution for some time. The solution that worked for me is:

Step 1:
In the main menu screen of the game go to

Options -> Video
Click Advanced options and set the option multicore rendering to DISABLE

This solution did the trick for me. Before that i had tried all the options in Vistas compatibility mode but nothing worked.