Hello everyone. I have found myself in a tricky situation. My Mac Pro 2010 won't turn on anymore all of a sudden. There is no click or sound when I push the power button, no light, no response whatsoever. I have replaced the power cord, plugged it into a different power source, unplugged everything and tried it but nothing works. When I press the 'DIAG LED' button inside the machine, the '5V STBY' LED illuminates (but only when I press the button). All other LED lights remain off. I don't have money to take it into a repair centre at this time and was wondering if there are some things I could try to get my machine up and running again. Thank you very in advance for your help. Regards, Ryan.