Hello all today I tried to exit the sleep mode in pressing a key(as usual), but it shows no display, and after a few seconds the fans have become noisy. I have been using my Mac for bout four years (I almost never turn it off) so I wonder if it is coming to his life's end. I tried a PRAM reset using the Apple+Alt+P+R keys: I got the second bong but no luck, the display stays black and eventuelly turns off. I unplug it for a long time, and replug/power on: no luck I unpluggued all the peripherals (keyboard): same issue, but the power LED blinks/stays off I'd like to try an SMU reset as mentionned in step 5 of this article: http://support.apple.com/kb/TS2094 I removed the memory access cover as per User guide. But then it mentions two rings in the RAM slots and I think they're inside. So I cannot remove the RAM or take off the back cover. Any ideas on that or on my issue in general? Thanks!