I have downgraded and installed Windows 7 on a laptop which was bought with Win 8 pre installed.

In device manager, there are 2 unknown devices with the following identification:

  • ACPI\GPIO0001 for one and,
  • ACPI\SMB0002 for the second one.

The laptop is working fine, but I can't find the driver for these items. Look everywhere, including Sony website. I even bought Driver Finder to locate the drivers. But DriverFinder did not detect these devices and did not look for drivers.

  • The devices in question likely do not have a Windows 7 compatible device driver. – Ramhound Jan 7 '14 at 2:11
  • have you tried the Win8 drivers? – magicandre1981 Jan 7 '14 at 5:15

Sounds like this "Driver Finder" software's a scam.

From the Device Manager, under details, look up the Hardware IDs. That will be your first clue.

You should have little trouble installing windows 8 Drivers in Windows 7.

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