Hi,
Thank you for posting your query in Microsoft Community.
From the issue description you have posted, I understand that you are getting error code 28 while using Speedlink Strike-FX gamepad in Windows 7. I will certainly help you with this issue.
Does the device work on any other computer?
Error Code 28: The drivers for this device are not installed.
Recommended resolution.
Install the driver.
You may be prompted to provide the path of the driver. Windows may have the driver built-in. If you are asked for the driver and you do not have it, you can try to download the latest driver from the hardware vendor’s Web site.
In the device Properties dialog box, click the Driver tab, and then click Update Driver to start the Hardware Update Wizard. Follow the instructions to install the driver.
If you face any more issues while working with Windows do post on Microsoft Community Forum.