You have the same issues as whom?
What's the laptop model?
If your device officially supports Windows 10 only, may I ask why are you installing Windows 8?
You could use the same drivers available for Windows 10.
Just install them manually by updating the drivers of the hardware (chipset, audio, touchpad, etc) from the device manager.
Some hardware might not work as intended since it might not have been tested to work with Windows 8.