SOLVED! “PCI Express Active-State Power Management (ASPM) Disabled”

Once it comes to troubleshooting power issues on Windows computers, Power Efficiency Diagnostics Report often provides useful information. That being said, it’s not uncommon for the non-tech-savvy to be confused by the findings of the Power Efficiency Diagnostics Report. The  Power Efficiency Diagnostics Report of your PC says something about “PCI Express Active-State Power Management (ASPM) disabled” but you don’t know what that means? In that case, this article could help you out.


Outdated Operating System

If your Windows computer’s operating system is outdated, it’s only natural for errors to occur time and again. Thus, regarding “PCI Express Active-State Power Management (ASPM) disabled“, you should give the OS some thought. 

Idle Hardware

In case you don’t know, the ASPM mechanism manages the power status of PCI Express devices. As a result, if your PC contains idle hardware, ASPM may act up out of the blue. 

“PCI Express Active-State Power Management (ASPM) Disabled”: Solutions

Run The Power Troubleshooter

Once it comes to energy issues, you should consider running the Power troubleshooter at the earliest opportunity. 

  • Step 1: Press Windows +  X then hit Control Panel.
  • Step 2: Type Troubleshooting in the search bar of the Control Panel.
  • Step 3: Look to the left, choose View all and select Power.
  • Step 4: In the Power troubleshooter dialog box, click Advanced then pick Run as administrator. Provide the credentials if required.
  • Step 5: Click Next and then follow the on-screen prompts to complete the Power troubleshooter.

Update Windows 

  • Step 1: Go to Search bar, type update and hit Enter.
  • Step 2: Hit Check for updates.
  • Step 3: If you see pending updates, allow Windows to download and install them.
  • Step 4: After the update finishes, restart your computer.

Unplug Idle Hardware From Your Computer

Idle hardware connected to computers can mess up the operation of Active-State Power Management (ASPM).  To unplug idle hardware on your PC, go through the steps down below”

  • Step 1: Turn off your computer.
  • Step 2: Unplug idle hardware.
  • Step 3: Turn on your computer, run the command powercfg -energy in Command Prompt (Admin) to generate a Power Efficiency Diagnostics Report and see how things turn out. 

Frequently Asked Questions

What is the Active-State Power Management (ASPM) PCI?

ASPM is a management mechanism that is used on PCI Express devices to enable power saving when your computer is active. To do so, ASPM powers down the PCI Express serial link when there is no data traveling through it. In the case that data is being transmitted through the serial link again, the ASPM automatically allocates power again.

What is PCI in full?

PCI in full is Peripheral Component Interconnect (PCI). It is a localized computer bus that is used for attaching devices to your computer.

Is PCIe superior to PCI?

Yes, it is. The PCI Express (PCIe) standard has higher data bandwidth than PCI. As a result, it is used more often in modern computer systems. Notably, PCIe is backward compatible with PCI.

Which types of components can be attached to the PCI Express slot?

Nowadays, a lot of components that can be attached to the PCI Express slot exist. Examples include sound, graphics, video, Ethernet, TV tuner and Wireless + Bluetooth network cards. Users can connect SATA Expansion and RAID controller cards to the PCIe slots as well.

What is the role of a PCIe slot?

A PCIe slot connects your expansion card to the motherboard. Its topology facilitates data transfers.

Tips And Tricks

  • You want to connect multiple cards to your computer’s motherboard? Use a PCIe splitter. Plug in the splitter into one free slot to power and take advantage of the slot extensions.
  • Use the Maximum Supported setting under Maximum PCI Express Speed to run your PCIe at the highest possible speed. That setting proves handy for gaming, intensive programming, Artificial Intelligence (AI) research or graphic design.
  • If you always use your computer while it is plugged into the power outlet, disable Link State Power Management. By doing so, you could give your computer more latency for quick processing. However, if you use a laptop, keep Link State Power Management enabled to save battery power.
  • Plug your sound card into the PCIe x1 slot. Essentially the smallest PCIe slot on your motherboard, PCIe x1 is ideal for sound cards.
  • Always put your computer’s graphics card in the PCIe x16 slot. It consists of 16 PCIe lanes and delivers the highest data throughput when compared with other PCI slots on your computer. Thus, PCIe x16 is the best slot for Graphics Processing Unit (GPU).

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