Hi, izzy
The previous Xbox pairing does not lock the controller to that console. Since Windows detects nothing over USB either, the first thing to rule out is the cable, as many Micro-USB cables provide power only and cannot transfer data.
Here are some suggestions you can try:
Try a different known data-capable Micro-USB cable, ideally one previously used for transferring files from a phone or another device. Connect it directly to a rear motherboard USB port. Xbox Support confirms that the cable must support data transfer. Xbox controller connection guide
While connecting it, watch Device Manager. If the list does not refresh and no unknown USB device appears, test the same controller and cable on another PC. This separates a controller USB-port problem from a Windows problem.
Since the controller works on your brother’s Xbox, reconnect it there, open Xbox Accessories, and check for a controller firmware update. After updating, fully power off the controller, remove its batteries for about 30 seconds, and test it again on the PC.
If USB works with another cable but Bluetooth still does not, it is recommended that you use the official Xbox Wireless Adapter for Windows. It uses Xbox Wireless rather than Bluetooth and supports Windows 11. Wireless Adapter setup
If it also fails over a known-good data cable on another PC, the controller’s Micro-USB data connection may be damaged even though it still works wirelessly with the Xbox.
Thank you for your patience in reading, I hope this information has been helpful to you.
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