IO Shield Caused Short-Circuit. After fix, USB ports Randomnly Stop Working

[kuro16]

As the title states my IO Shield (or Q-Shield as Asus calls it) caused a short-circuit between my usb ports on my motherboard (ASUS Z77 Sabertooh). This occurred I installed my motherboard from my old Cooler Master HAF 922 case to a new Fractal Design Define S case. Unfortunately, the standoff's for the motherboard (MB) for the Define S caused my MB to sit ever so slightly lower than what it did in my HAF 922. This caused the ports on the back of the motherboard to not line up properly. So when I plugged my mouse and keyboard into the MB usb ports the current was drawn through the usb ports and over the IO shield, which caused Windows to report "USB over current status detected". At first I didn't know what the issue was exactly, so I tried just unplugging peripherals like an external USB hub I had (only had a controller and a data cord to my UPS hooked up to it). That didn't work, so I shut down my computer. I then tried restarting but the computer wouldn't even turn on; I would just hear the PSU click and stop. I then unplugged my mouse and keyboard and the computer would run, but since I had no keyboard and mouse I would get a warning in the bios post screen. So I plugged them back in and then the post screen told me basically the same thing windows did and that there was a current overdraw detected in the usb ports So after googling around, I suspected the IO shield as the culprit. After inspection I noticed it was a little off. I then proceed to remove my motherboard, install 3 of my older standoffs from my HAF 922 (on the side of the MB nearest to the IO ports), and even use the screws that came with HAF 922 for those 3 standoffs. This raised the MB to the perfect level to line up with the IO ports and voila! I turned on the computer and my mouse and keyboard worked!

So that was the background. Flash-forward at least an hour since I restarted the computer and I hit my current issue (pun possibly intended) in which my computer and mouse randomly shut off. I get no warning signs from windows that there is a current overdraw and since the IO ports appear to be lined up correctly now, and considering my positive reaction to my fix for that, I would have to say I don't think that is the issue anymore. So my question is: Could my brief stint with the IO shield causing a short have permanently damaged my USB ports? If so, how can I confirm that this is the case and find out the extent of the damage. If it is broken is there any way I can fix it (I am fairly sure the warranty for the motherboard is 5 years, which means that it would have expired already in April of this year).

Right now I am leery to even turn on my system for fear of committing further damage, so any help in this matter is certainly appreciated. Sorry for the long-winded explanation, but I figure the more info / background I give the better help I can get. If any more info is needed please ask.

Thanks

 

[Froge]

Sounds like it might be shorted, not for sure though but I'd contact the manufacturer.