From further research, the Rosewill APS-450CCP PSU has been used on motherboards with
8 pin ATX 12V auxiliary CPU sockets. This suggests that the APS-450CCP must have an
8 pin (or maybe
2 x
4 pin) ATX 12V auxiliary connector(s). But whether there is/are
4 pin(s) ATX 12V auxiliary connector available with the APS-450CCP PSU is still unclear.
The motherboard (GA-H81M-H) used with Zeze's build requires a
4 pin ATX 12V auxiliary connector from the PSU. But at this stage it appears that the APS-450CCP PSU doesn't seem to have the required
4 pin connector (as per Zeze's post below), so the system can't be fully powered up?
So from this it seems the APS-450CCP PSU connector arrangement (
8 pin ATX 12V) is not pin to pin compatible with the selected motherboard (
4 pin ATX 12V). But, assuming that the APS-450CCP PSU uses a
8 pin connector (or possibly
2 x
4 pin connectors side by side, which may look like an
8 pin connector), it is possible to use the 8 pin connector on a 4 pin socket,
space permitting, with 4 pins of the 8 pin connector overhanging the 4 pin motherboard socket.
Basically, at this time, and from post number 13 -
Update.
So I took the battery out and cleared CMOS.
I also put in the ATX_12 cable in...(yes I missed this, although my last system didn't require it). However, the powersupply only came with a 6-pin (not 4), it's the only one colored blue, rest are white. I just put it in anyway leaving the right 2 pins empty.
Now it won't even turn on. Absolutely nothing, just completely dead. Zero response to the power button.
It won't turn on at all with zero my initial config (prior to CMOS clear & without CPU ATX power).
W.T.F?
The PSU is Rosewill APS-450CCP
it appears there was some confusion in that a PCI-e
6 pin connector from APS-450CCP PSU was mistaken for the ATX 12V connector, in the process of trying to get the system to boot. The PCI-e 6 pin connector was forced into the motherboard 4 pin ATX 12V auxiliary socket, with a possibility of electrical damage to either the motherboard or to the APS-450CCP PSU, or maybe damage to both.
Options now are -
1) Get another quality PSU that has a
4 pin (preferable, or
2 x
4 pin) ATX 12V auxiliary connector(s) and try this PSU on the motherboard, which is hopefully not damaged.
or,
2) Assuming the APS-450CCP PSU has
8 pin (or
2 x
4 pin) ATX 12V connector(s) get another motherboard that has an
8 pin ATX 12V auxiliary socket, or a motherboard with
4 pin ATX 12V auxiliary socket
IF the APS-450CCP PSU has
2 x
4 pin connectors, and try the APS-450CCP PSU with it. Hopefully the PSU is not damaged.
or,
3) Get another quality PSU and another motherboard, making sure that the PSU has, preferably, either or both 8 and/or 4 pin ATX 12V auxiliary connector(s) to match the corresponding 8 or 4 pin ATX 12V socket on the motherboard.