Motherboard Needs 12v Standby, 3.3 Power Okay

Greetings all and I appreciate whatever help/info/time is provided.



Questions:

What do I need to do to adapt a standard ATX PSU, to support a 12v STBY (1.3A) and 3.3v PWR_OK motherboard ?

Would I damage the motherboard/peripherals in trying to put 5v on the 3.3v Power Okay; 5v (3A) on the 12v (1.3A) standby ?

Is there an Always On source of 12v inside the ATX PSU that I can tap into ?

If I used a generic source for 12v VSB, would the relatively dirty power have negative affects ?



Details:

I have a new replacement PSU, a Corsair CX600M ATX (5v 3A standby) power supply.



The single input motherboard needs 12v Standby (1.3A), and 3.3v Power Okay.



As you folks know, the ATX specification is 5v Standby, and 5v Power Okay.





Background:

http://ift.tt/1CJPrDc

I have a HP 6200 Pro MicroTower (P/N: LA062UT#ABA) with a "bad" 320W PSU (Model PC9057 P/N 611483-001 / 613764-001).

This motherboard (P/N 614036-002) has a proprietary 12v Single Output PSU; 16A Main, 16A CPU, 1.3A VSB. 320W is probably the highest HP makes available for this line of PC. If there's a compatible replacement (server line?) I am not aware of it.

Actually it's not really bad, I just overloaded it with a higher end Video Card.

It handled this card for over a year before it went unstable. So it still works, however the system isn't stable with it; freezes in a matter of minutes. To note, the standby voltage reads 11.4 but that's only a 5% difference from the 12v spec.



I'd hate to have to get a new case and motherboard but if that's what I have to do...



Again, your time and info are greatly appreciated.

Motherboard Needs 12v Standby, 3.3 Power Okay