I own the Corsair 520 and recently I have had problems with my Computer not shutting down properly or going into sleep mode. The fans keep spinning and the case led seems to be still on, but the hard drive and display is off.
I've tried reformatting and clearing CMOS but no luck. The only way to switch it off is by holding the Power Button for a few seconds.
Another problem is that when this happens, and I tried to turn it on again, the PC wont POST or Beep at all sometimes. To fix this problem, I just constantly hold the power down to shut down and turn it on again until it works.
Everything else seems to be working. I can get into Windows fine, can play games perfectly, open applications, no errors at all.
Thanks.