STALKER: SoC won't even start up!

[Marstruc]

Right, I've recently got Shadow of Chernobyl, (.nrg file) and have installed it, though it blue screened at the end of the setup, now, every time I start it up, I get this:

XR_3DA.exe caused BREAKPOINT in module "M:\Program Files\THQ\S.T.A.L.K.E.R. - Shadow of Chernobyl\bin\xrCore.dll" at 001B:005BCC85, xrDebug::backend()+165 byte(s)

Any suggestions, BTW, it can run using my crappy HP Compaq 6720s.