Is the Keyboard My Problem?

I just RMA'd my board because it randomly shut down in windows and refused to power back on.  I mean absolutely no power would go into the system.  I tested the PSU, video card, and ram.  Could it have been my keyboard?  I just read the thread on it...do incompatible keyboards cause the computer to not post or to actually not turn on at all.  I have an Antec keyboard that came with my old Alienware.  It's pretty generic looking.

This is a serious issue and should be made sticky I agree!
I am having the same problems with the keyboard causing non boot, or the keyboard not functioning (it is a generic PS2 keyboard).
The IO plate is not fowling anything as far as I can tell, there are no shorts that I can see (im still to try the card outside of the box but its a big hassle to get it out of course)
It seems to get stuck in some mode (either all LEDs on or off), and then sometimes boot.
I tried a USB keyboard once, but that didn't seem to help (couldnt get into  the BIOS with the DEL key).
The strange thing is on my K8N NEO2 Platinum, the PS2 keyboard works intermittantly.. at first it didnt work, then it suddenly started to work, and now it doesnt work at all!  
I will try another type of keyboard tonight and hopefully that might shead some light on the problems.
I also seem to get a power down suddenly for no reason.
It's not sounding so hopefull is it.  
Darel

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