Jump to content
Search In
  • More options...
Find results that contain...
Find results in...

Externally Powered USB Hub Killed My PC.

Recommended Posts

Posted · Original PosterOP

I’ll try to make this short and easy to understand:

This evening I plugged an externally power USB Hub into the front IO of the PC I recently built. As soon and the connector made contact with the port, the PC immediately shut off. However, the USB fan I had plugged in was still working, uninterrupted. Seconds later, the smell of smoke filled the room and I was having a massive anxiety attack. The PC refuses to turn on at all as a result of all this. 

What I would love to know right now is essentially what exactly happened. Did it kill my motherboard? My PSU (I doubt it)? EVERYTHING PERHAPS?! Also, could I be eligible for replacement parts? I should also mention I have no spare compatible parts to complete tests with. 

I’d just like to thank y’all in advance. Any help or feedback is just really appreciated. :’(

Link to post
Share on other sites

Sounds like it shorted. Contact the seller and manufacturer ASAP. Were you using the power adapter included in the package or a different one? Do you know where the magic smoke was coming from?


The only way to know what all was affected is to take it apart and test one component at a time. If it won't power on at all (as in, no lights, no fans, nothing happens when you plug it in, turn on the PSU and hit the power button), you might have managed to kill your PSU and nothing else. Start by tearing the system down to just mobo+CPU+RAM. Disconnect the PSU from everything, plug it in, then short the green and black wires to see if the fan kicks in. I use a paperclip wrapped in electrical tape to do this. If the PSU doesn't do anything when shorted, it's dead, and you'll need to get a different one to continue on. If it works, connect it to the motherboard/CPU/RAM and use a screwdriver on the front panel connectors to try and short the thing to life. If it fires up, ok, cool. Keep on moving down the line. If it doesn't at all, take every RAM stick out and put one in the slot farthest from the CPU socket (so, far right). Try to boot. If it boots, you probably have a dead RAM slot. If it doesn't, keep moving to other slots, one by one and one stick at a time, until you either get a POST or have gone through all of them with no success, which is pretty much a gg for your board.


If the hub was connected to a case USB connector and not directly to the back of the mobo, take a look around the header the USB slot in use was connected to and look for any scorch marks. If it did short the board, the USB header was probably damaged.


It's really just a matter of taking the thing down to its most basic components and walking through step by step to see what it takes to get it to POST.

Sabre - i7-8086K - MSI GTX 1070 Gaming X - AsRock Z370 Fatal1ty Gaming K6 - 32GB Crucial Ballistix Sport DDR4-2400 - 250GB Western Digital Black M.2 NVMe PCIe 3.0x4 - 1TB Inland Professional SSD - 960GB SanDisk Ultra II - 4TB Seagate Barracuda - Corsair RM650i - Fractal Design Meshify C White TG - Noctua NH-C14S


Senketsu - Ryzen 5 1600 - MSI GTX 1050 Ti LP - Gigabyte B450 AORUS M - 16GB "OEM Special" craptastic DDR4-2400 with a stunning green PCB - 500GB Dell M.2 NVMe SSD - Silverstone SF450 - ABS R206-ITX (worst/best case ever) - Wraith Spire


Banzai - i7-6700T - MSI RX 550 LP - Gigabyte GA-B150N Phoenix - 16GB HyperX Fury DDR4-2400 - 240GB Crucial M500 - Seasonic 300W Server PSU (loud af) - HP Slimline s3200n chassis - Rosewill RCX-775-LP (loud af)


Ok Boomer - Pentium G3258 - MSI GTX 750 Ti LP - ASUS H81M-C - 16GB Patriot Viper DDR3-1600 - Vaseky 64GB mSATA SSD - Corsair SF600 - Athenatech A100BB - Rosewill RCX-Z300 - Windows XP

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now