Power Options - Add or Remove Link State Power Management

How to Add or Remove PCIe "Link State Power Management" in Power Options in Windows

information   Information
The Link State Power Management is a part of PCI Express Active State Power Management (ASPM). The link State of a PCIe Device is converted from L0 (on) to L1 (off) when the link is not transferring data. The hardware is automatically converted to L0 again when data is available to transfer across the link.

This tutorial will show you how to add or remove the "Link State Power Management" setting under PCI Express in Power Options for all users in Vista, Windows 7, and Windows 8.

You must be signed in as an administrator to be able to do the steps in this tutorial.

Note   Note
This could be handy if you wanted to set this how you wanted, then remove the setting to prevent other users from being able to change it in Power Options.

EXAMPLE: "Link State Power Management" in Power Options


Here's How:

Note   Note
The .reg files below are for the registry key and value below.


Attributes DWORD

1 = Remove
2 = Add

1. Do step 2 or 3 below for what you would like to do.

2. To Remove PCIe "Link State Power Management" from Power Options
A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

3. To Add PCIe "Link State Power Management" to Power Options
NOTE: This is the default setting.
A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

4. Save the .reg file to your desktop.

5. Double click/tap on the downloaded .reg file to merge it.

6. If prompted, click/tap on Run, Yes (UAC Windows 7/8) or Continue (UAC Vista), Yes, and OK to approve the merge.

7. When finished, you can delete the downloaded .reg file if you like.

That's it,



  • Add_PCI_Express_Link_State_Power_Mangement.reg
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  • Remove_PCI_Express_Link_State_Power_Mangement.reg
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  • PCI_Express.png
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