Wireless device stops working on a lenovo laptop, often when going to or coming back from sleep.
The device driver for the "Intel(r) Pro/Wireless 3945ABG Network Connection' device is preventing the machine from entering standby. Please close all applications and try again. If the problem persists, you may need to update this driver.Root cause:
Buggy driver (power management)
Reinstall the latest driver from the lenovo website.