A device driver has been updated, and the device no longer works. Which of the following steps should the systems administrator perform FIRST?

Rebooting an additional time does not revert a driver update and is unlikely to resolve a compatibility or corruption issue introduced by the new driver.

Rolling back the driver restores the last known working version, which directly addresses the root cause - the faulty updated driver. This is the least invasive and fastest corrective action since the failure is clearly correlated with the driver change. Windows Device Manager provides a built-in 'Roll Back Driver' function specifically for this scenario, making it the standard first response.

Defragmenting the hard drive has no effect on driver functionality and is unrelated to resolving a device failure caused by a driver update.

Replacing the physical device is premature and unnecessary when the failure was caused by a software driver change, not hardware failure.