After you set Windows 7 to go to sleep and then wake it up, if you found that your USB printer doesn’t work properly any more, you can refer solutions here to fix the problem. Outdated drivers or power management can be the cause of this problem. 

First, try updating your printer drivers.

If printer drivers are outdated or missing, the printer won’t work properly. You can use Device Manager to update the drivers. Follow these steps:

1. In Device Manager, expand category “Print queues”. Under this category, right click on your printer device and select Update Driver Software…

2. Click Search automatically for updated driver software. Then Windows will update the driver automatically.

If Windows doesn’t update the driver successfully, you can go to your printer manufacturer’s website to check and download the latest drivers manually. To download the right drivers, you are required to know your printer’s model number and the specific operating system (Windows 32-bit or Windows 64-bit). 

Alternatively, you can use Driver Easy to help update the drivers. Driver Easy is a driver update tool which will detect all outdated and missing drivers in your computer, and find new drivers for you. You can use it to update drivers for your USB printer.

Driver Easy has Free version and Paid version. To save more time on updating USB printer drivers, you can consider using the Paid version. With Paid version, you can get higher download speed and all drivers can be updated automatically with just 1 click. You will have 30-day money back guarantee and free technical support guarantee. You can ask for a full refund if you want and ask for further assistance regarding your printer issue.

If your printer drivers are up-to-date and the problem persists, the program might be caused by USB power management. If Windows is able to shut down your USB controller to save power, it sometimes won’t be able to power it back up again, which may prevent your USB printer from working. 

Follow these steps to change the setting of the USB power management. 

1. In Device Manager, expand category “Universal Serial Bus controllers” and Double-click on the USB Root Hub device.

2. Click the Power Management tab.(if there’s more than one USB Root Hub device, repeat these steps for each one.)

3. Turn off the Allow the computer to turn off this device to save power option, and click OK when you’re done.

Try solutions above, and your USB printer should work again. 

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