Help!! What goes where?

[PeterGee]

I am considering building a new desktop but in the meantime my desktop will not turn on ! However I have discovered that there are three sets of cables not plugged in to the Motherboard.
Brown and Black power feed, Black and Purple Reset switch and a Blue and Black LED power.
Thay have all come out of a socket on the mother board but I have no idea what goes where. I enclose images of cables and socket. Thanks for any help.

 

[beers]

They're labeled on the bottom. If the LEDs aren't displaying correctly try flipping the connector/polarity. The buttons can be installed in either orientation.

Power SW goes to +PW-
Power LED goes to +PWR_LED-
Reset SW goes to -RES+
HDD LED would go to +HD-

Pretty straightforward.

 

[PeterGee]

Thanks that was straightforward. Now on pressing the power on button the LED's flash the fan and the fan in the PSU all twitch but the machine will not start. I tried the paper clip test on the PSU and it the PSU runs superbly. There is a new CMOS battery in it. The machine has been stored dry for a few months since last use. Any ideas gratefully received.? It seems like it is trying hard to start but seems to have some sort of "inertia" to overcome.

 

[PeterGee]

I worked through everything and decided to look at the USB ports. I found one that was shorting out!! Once I isolated the faulty USB it powered up nicely. I guess you have to go through everything to find such a fault. Thanks again for all the suggestions.