So, I installed the game and ran it, everything worked just fine, played through some of the 1st level, getting out on the plaza outside the train station.
Then saved and shut it down (the game) and went surfing for a while and was going to take it for another spin. I fired it up and the intro passed and the animated game menu (the out of focus thing) was loading and I was all of a sudden dropped back to desktop with the following apocryphical dialog message:
The instruction at "0x241f94f7" referenced memory at "0x0d98f41c". The memory could not be "read"
My system is an AMD dual core 3800 on 1 GB RAM (1 stick). Mobo is a Fatal1ty AN8 SLI thingamajingy with a geforce 6800GS PCIe card 256mb.
bios and drivers are all the latest versions, grafix card ran on latest public then switched to beta drivers hoping it would cure it and then back but no joy.
Read around the net and it seems to be problem quite a few suffer from.
Whats broken and how do I fix it? It s only HL2 suffering from this annoying issue, everything else works just fine and dandy