Question USB Over Current Status Detected!!

[Daaavo]

Old school system:

Asus P8z68-v pro motherboard
2500k

I've never had a problem with this system since built, but today it started showing this and then shutting down. I can't even enter the bios.

I've unplugged everything USB, including the front port connection on the MB. No help.

I read somewhere that a person had the issue and it wound up being the I/O shield, so I unbolted the MB, and pulled the shield.....no help either.

The cmos battery voltage is normal, and a bios reset didn't help.

If you have any ideas, I'm all ears.

*********************Update*********************

Instead of bumping, I'll just add this update.

I was never able to figure out this problem, and just went with a newer system.

Tcsenter, I did place the board on a non conductive mat, but the problem persisted. I did try another same-make board off eBay, but it was DOA. After that I just threw in the towel.

The i5-2500K cpu ride from 2011 was a journey, though! Incredible system with wild longevity!

Thanks for the ideas of help.

dave

 

[Seba]

Check the USB ports from the motherboard. Maybe something conductive is stuck inside one of them (or something is bent inside), shorting +5V and GND pins.

 

[tcsenter]

How old is CMOS battery? They can show good voltage in HWM even if getting flakey or marginal.

 

[Daaavo]

Thanks for the replies.

So yeah, I pulled the cmos battery and checked it out this morning (it had been replaced a little over a year ago). It's an Energizer, that's reading ~3.2vdc.

I blew out all the USB ports and nothing looks unusual or broken.

Very odd problem.

 

[tcsenter]

Maybe a SMT component e.g. resistor for the USB port circuit might be flakey, overheating, going bad? It could be anywhere, even inside the Intel chipset. When you say 'unbolted the motherboard' you meant removed from the chassis entirely, placed onto some kind non-conductive flat surface like thin foam piece/cardboard?