Something strange is happening with my new Corsair TX750M. When I move the mouse or scroll down/up, I can here a buzzing sound coming out of the PSU. This is quite weird as my PSU is just 3 days old! Please help!
check the psu connections press every cable firly into its housing and if you still get it then i would consider sending the psu/motherboard back... as it sounds like its shorting somewhere.
it is a very common problem and the only real solution is to rma the psu first and if the problem persist rma the motherboard... like i say it is common but very hard to pinpoint the exact cause... 70% of the time it will be a cheap or broken component in the psu the rest 25% is down to failing motherboard and 1-2% a shielding issue on the usb cable. (leaving a little room for other issues)