The USB ports on the back of your PC have ceased functioning.
The USB ports on the back of your PC have ceased functioning.
It seems the USB ports stopped functioning only on the back of your PC while working on the front side. Could something have changed there? I tried talking to friends on Discord, watching videos, and even uninstalled the USB controller or restarted the computer, but nothing helped.
It seems your rear port controller malfunctioned, likely due to a short circuit. You might have connected a different device. Still, a PCI-e card can offer USB functionality in the rear.
If you have a USB 2 port or a USB 2 hub, you could surpass the allowed current capacity (~480 mA) for that port based on what’s connected. (Hubs supporting USB 3 can deliver up to 900 mA each.) If your hub is passive rather than active (meaning it draws power from the wall), it will also consume some of the USB port’s current. You might lose power in certain ports under these conditions. Tools such as USBTreeView from Nirsoft help monitor all USB devices and ports on a hub, displaying detailed statuses. It has a learning curve but provides comprehensive information about each device. If your USB ports or devices malfunction, you can view error codes and port health there. On my PC, this issue appears in Windows as shutdowns when the maximum current is exceeded. A motherboard’s USB controller may have multiple hubs or root hubs, each with ports. Some controllers support both USB 2 and 3, and may have virtual companion ports that activate only with a connected USB 3 device. If current draw is too high, the controller might cut off all USB ports on that side. Many systems have more than one controller—some have separate ones for USB 3 and USB 2—so some ports may remain functional while others stop. Start simple: unplug everything, power off, restart, then slowly reconnect only essential devices like keyboard and mouse. Then try connecting the hub again. If problems persist, consider using a powered/active hub or checking chipset driver settings.
I powered on my PC this morning by connecting just the power supply and the DP, then gradually added the devices in the USB slots. My keyboard worked in every port, and the mouse also functioned properly. When I connected the USB hub, some ports stopped working and the hub’s LED didn’t light up. It seems the issue lies with the hub itself.