Specs: AMD Athlon XP 2400+ 2.0ghz, NVIDIA GeForce FX 5700 128mb, some epox mobo
, 512mb ddr400 Any help much appreciated.
, 512mb ddr400
,
etc..). I have tried different drivers, different ram, different video
card, different cpu, different cpu fan...
, 512mb ddr400 
My Radeon cards have never failed to deliver when running HL2.
I do not push them by running at a higher level than they preset themselves so I am unsure if they could be made to fail.
My old machine, a P4 1.8 with 512 pc2100 ram and a 9000ati 64 meg card has run HL2 virtually all day before with no issues.
My new PC, has no trouble at all.
sounds to me like you have a heat issue, only because i am hesitant to blame nVidia.. that company has always delivered for me, before i bought my 9000. nVidia has never failed me either. :/
I do however prefer ATI now.
check for dust.
[addsig]
the card could still be overheating. if the dust was thick enough to cause damage to the cooling fan that cooled the card. the cpu is not the only culprit when it comes to locking up your pc.
see if you have a temp monitor for the card.
[addsig]
