Experiencing Problems with Steam Need help

[curiosity]

Hi, the problem is my nephews system hangs/crashes after about 30 mins into a game of TFC. I've removed any viruses & changed the graphics card. No other problems encountered apart from this. Any ideas or suggestions or similar experiences?
Thanks

[MargeB]

turn off sound card acceleration

run.

if ok, is sound card prob.

turn down video card performance one notch (ctrl panel//system///performance//video). This should help.

Make sure you have tons of hard drive space and defrag the drive.

Should help.

[MargeB]

u can check the sound n stuff by going to start//run//type : dxdiag...go to 'sound'

good luck