Portal Game Lags Then Crashes On First Level? Hl2.exe Error?

My copy of Portal crashes when i go through the first portal on my laptop.
I cleaned out my drivevs of clutter so i have plenty of available memory.
I have almost 1gb (.99 to be exact) of RAM and am running off of a 1.73 GHz processor with Windows Vista as my operating system. I dont know how to tell whatt kind of graphics card i have or whether it is above or below the necessary standard for the game. Also, i’ve heard that McAfee antivirus can effect the game. I have McAfee. Could that be the problem?

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2 Responses to “Portal Game Lags Then Crashes On First Level? Hl2.exe Error?”

  1. Soapy Taco says:

    It’s probably the graphics, Portal needs 128 mb dedicated memory and it can’t be your processor or ram. And McAfee can’t affect anything in Portal. Just buy a 128 or higher MB card.

  2. timtim50 says:

    Im not to sure about the Mcafee but if it isnt that it could also be the disc. I have had some games where it just wouldnt run and i exchanged the disc for a new one and it worked perfectly.

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