Hi, basically I left my flat on the 17th last month to go home, I left my computer on folding. A cleaner has since been in my room and had moved my PC to a side (how I know someone was in here). I got back to my flat last night to find my audio is not working on my computer at all. It had played up in the past but disconnecting the front USB etc and rebooting without them, then with them again usually fixed this problem. It didn't help this time, and I'm stuck for ideas short of formating (something I really am unwilling to do). I have onboard sound. So far I've tried: Checking the bios, changing the onboard sound setting from 'auto' to 'enable' - didn't help. Re-installing the audio drivers - didn't help Playing around with all the connectors and rebooting - didn't help Checked to makesure speakers are working, they are. Checking the volume control settings which are all correct, the sound isn't muted. System restore - didn't help. Left the PC to cool down overnight and try again in morning - didn't help I'm now all out of ideas, so if anyone can help I'll be really thankful. I have: ASRock Duel Sata 939 mobo, AMD 64 3500+ overclocked, ATI x800 GTO 256MB, 120GB WD HDD (IDE) and a Lian-Li PC-7+.