I have two ATX cases and two micro-ATX motherboards. I just bought the second case to hold my newer board and because I was having trouble turning off the old case and motherboard combination. I finally pulled the power cord on the old combo a couple of weeks ago because I could not turn it off and if the power went off it would not reboot until I could get the power supply not to be running as soon as power was applied.
I have now put the board in a new case and I have the same problem. The power supply in this case has a switch on it and when I turn this switch on everything powers up. Unfortunately the system will not boot when powered up like this. I have tried to hold the power switch for 4 seconds and other things but to no avail. Disconnecting the cable from the switch to the mb will not prevent everything from being powered up when the switch on the power supply is turned on. I have tried clearing the CMOS and just about everything I can think of.
Do I have a bad power supply in my original case and has that power supply ruined by MB? I have never been a fan of the soft switch ATX system and if the fact that some little problem with the power supply can ruin my MB will not imporve my opinion. Whatever happened to requiring a power good response from the CPU before the power was allowed to get to the rest of the system? I really have problems with the ATX soft switches on my servers. If I am at home and power goes off long enough for my UPS software to shut down servers, when the power comes back on I have to go back to work and turn on 12 of 15 servers. The other three have the positive off/on switches of the past.
Anyway any help on my problem of turning off the power in my new case will be appreciated.