I have installed the Corsair AX850 850W on my computer. This is working good when I use that continuously but when I cold start my computer then it become problematic to start the system for a few minutes. If I disconnect the system from the power socket and keep that as it is for, ets say 1 hour. After that when I connect that back to the socket and try to boot the system then it failed to boot. I have to wait for 10 to 20 minutes in order to start the system. After about 20 minutes when I click on the power button on the PSU then it starts the system normally. It didnít show any problem like this when I turn off the computer and start that immediately.