gofish
New member
I have a problem with my USB 3 ports. They work perfectly OK with USB 2 devices plugged into them but when I plug USB 3 devices in, my PC slows down and I can no longer control my mouse or carry out any other task on my PC - it seems to lock up until I unplug the USB 3 device.
The USB 3 devices work perfectly OK if not slower when plugged into the USB 2 ports on the PC.
My PC has an ASUS P8Z77-M Pro motherboard with i5-3570 CPU @ 3.40GHz and 16GB of memory, running Window 7 Home Premium x64 Service Pack 1.
I have searched everywhere for solution and reinstalled all the USB drivers with no success.
Has anyone had this problem and can help me with a solution.

The USB 3 devices work perfectly OK if not slower when plugged into the USB 2 ports on the PC.
My PC has an ASUS P8Z77-M Pro motherboard with i5-3570 CPU @ 3.40GHz and 16GB of memory, running Window 7 Home Premium x64 Service Pack 1.
I have searched everywhere for solution and reinstalled all the USB drivers with no success.
Has anyone had this problem and can help me with a solution.
My Computer
At a glance
Windows 7 Ultimate, Windows 7 Home Premium, W...Various16GB, 8GB, 3 x 2GB, 1GBVarious
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- Self Specified
- OS
- Windows 7 Ultimate, Windows 7 Home Premium, Windows 8.1, Windows 10 Tech Rel
- CPU
- Various
- Motherboard
- Asus and Gigabyte
- Memory
- 16GB, 8GB, 3 x 2GB, 1GB
- Graphics Card(s)
- Various
- Sound Card
- Whatever is on motherboard
- Monitor(s) Displays
- 32", 24", 19", 3 x 15.6" laptops, 10" laptop
- Screen Resolution
- Various
- Hard Drives
- 2TB to 32GB
- Keyboard
- Various Microsoft Wireless
- Mouse
- Various Microsoft Wireless
- Internet Speed
- 100Mb/sec
- Antivirus
- Microsoft Security Essentials, Microsoft Defender (Win8.1)
- Browser
- IE, Chrome
- Other Info
- Run Winpatrol and Malwarebytes Antimalware Pro on all PCs