How to Disable Sleep Mode on a Network Card

Network cards enable a computer to connect to other computers and devices using Ethernet standards. Different protocols can run on top of Ethernet, though the primary protocol used in most networks is TCP/IP for Internet connectivity. Some Ethernet cards have different automatic power settings available in an attempt to save energy. In some cases, these low-power settings, such as sleep mode, interfere with other devices on the network or the computer itself. You can disable sleep mode on the network card to negate this issue.

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How to Disable Sleep Mode on a Network Card
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Step

Click "Start" in the lower-left corner of the desktop.

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Right-click "Computer," then click "Manage."

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Click "Device Manager."

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Click the "+" to the left of "Network adapters" to expand the category.

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Double-click the network adapter for which sleep mode is to be disabled.

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Click the "Advanced" tab.

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Click "Sleep Mode" or "Power Settings" or "Green LAN," depending on the model of your network adapter. Some network adapters do not have a sleep mode or equivalent setting.

Step

Click "Disabled" under "Value."

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Click "OK" to save and apply the settings.