Failed to Lock Vertex Buffer

[Thor_God_Of_War]

Hey Guys.. New here..
I just purchased the orange box yesterday, hearing such good praise about how well HL2 is.
I installed it and ran it last night, ran like a dream. I started playing again this morning, and got to about the 3rd act, when all of a sudden, the game just locked up, and closed out.
Then, after attempting about oh... 20 more times to fire HL2 Back up and running, it always shut down on me. It would load perfectly, and get me right to the main page, but, when i went to click on load saved game, or new game, the load screen would come up.. then, my monitor screen would black out, go back to my desktop and give me this *insert swear word of choice* error, saying that the 3d directory couldn't be loaded, nor that the Vertex Buffer could be locked.
Now i'm sittin' here thinkin' it has to be with my Videocard.
I run a stock HP Media 2005 edt. computer, XP op. Desktop.
NiVida GEforce 6150.
AMD Athlon 64 x2 dual core processor 3800+

Can someone help me? From reading other message boards, this seems to be a frequent problem.
Thanks.
Thor
(aka: Sean)

 

[AciD]

Take a look at this FAQ:
Failed to lock index buffer in CMeshDX8::LockIndexBuffer

 

[Thor_God_Of_War]

Thank you AciD! Atleast someone here is nice enough to help a new guy.
Thanks.
Thor