Hi all, hoping for some help. While playing games getting this after 10-20 mins: STOP: 0x0000007E ()x0000005, 0xB89C7EE5, 0xB98ABBA8, 0xB98AB8A4) // kmixer.sys - address B89C7EE5 base at B89B5000, Datestamp 41107d32. Some more info: clean install of XP 2 weeks ago. Afterwards, was getting a blue screen related to bad memory; failed memtest no.7, then cleaned the slots, reseated the memory and it was running perfectly (passed all tests 6 times +) until this. Newest drivers for all devices. More: my onboard sound doesn't work (system says the device is OK but no sound) so I have it disabled and run another sound card - possible issue here? Feeling that it might be the slot the ram is in, rather than the RAM, though searches have suggested some kind of sound card issue. Any help would be much appreciated - I'll be offline until tomorrow morning and I'll check back here then. Cheers.