Question USB Over Current Status Detected!!

Daaavo

Platinum Member

May 23, 2000

2,238

1

81

• Nov 3, 2024

• #1

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.

 

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Last edited: Nov 3, 2024

Seba

Golden Member

Sep 17, 2000

1,564

223

106

• Nov 3, 2024

• #2

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.

 

T

tcsenter

Lifer

Sep 7, 2001

18,616

385

126

• Nov 3, 2024

• #3

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

 

Daaavo

Platinum Member

May 23, 2000

2,238

1

81

• Nov 3, 2024

• #4

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.

 

Reactions: tcsenter

T

tcsenter

Lifer

Sep 7, 2001

18,616

385

126

• Nov 9, 2024

• #5

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?