Laptop Wifi Issue

SammyBoyd

https://forums.moneysavingexpert.com/discussion/comment/82169139#Comment_82169139

Do you mean that you have followed the guide, but eventually there is no Power Management tab?

What model, exactly, is your laptop?

For now, rather than Device Manager, try this via the Control Panel:

• Press Windows + R, type control, and press Enter to open the Control Panel.
• Go to Hardware and Sound > Power Options.
• Click Change plan settings next to your active power plan, then click Change advanced power settings.
• Expand Wireless Adapter Settings and then Power Saving Mode.
• Change the setting to Maximum Performance for both "On battery" and "Plugged in".
• Click Apply and then OK.

Neil_Jones

The Power Management tab in Device Manager isn't always present because Windows handles it all now. Modern Standby its called, or S0 (zero) sleep.

In other words, the options discussed are not provided because a) they are not needed, and b) not all devices supported "sleeping" in this manner. Older devices may have the option, but increasingly newer laptops don't.

SammyBoyd

https://forums.moneysavingexpert.com/discussion/comment/82169302#Comment_82169302

Obviously Windows handled it before too, via Power Management 😊 Now you have to do the same thing, via the Control Panel.

It's obviously nothing to do with Windows handling it all, but the manner in which the PC is put to 'sleep'. Legacy is S3, whilst Modern is S0.

The main difference is that S3 (legacy sleep) cuts power to the CPU and most chips while keeping data saved in RAM, whereas S0 (Modern Standby / Low Power Idle) keeps the computer technically awake in a low-power state so it can run background tasks and wake up instantly.

Core Differences

• State & Power:
• S3: A traditional "Suspend to RAM" sleep mode. The processor and motherboard chips turn off, and only system memory (RAM) stays refreshed with power.
• S0: Known as Modern Standby or S0 Low Power Idle. The system remains in an active low-power state (similar to a smartphone) where components power down or ramp up gradually rather than cutting power all at once.

• Network & Background Activity:
• S3: The computer is completely paused; it cannot fetch emails, download files, or run network tasks while asleep.
• S0: Can stay connected to Wi-Fi or cellular networks to sync emails, receive VoIP calls, and process background tasks.

• Resume Speed:
• S3: Takes a few seconds to reinitialize the CPU and hardware context.
• S0: Resumes twice as fast (often instantaneously) because the hardware does not need a full BIOS wake cycle.

• Power Plans & Controls:
• S3: Supports multiple classic power schemes (Balanced, High performance, Power saver) and traditional sleep button defaults.
• S0: Restricts power plans strictly to Balanced mode.

• Overheating Risk (The "Bag" Issue):
• S3: Truly sleeps, meaning a laptop in a backpack will stay cool and off.
• S0: Because background tasks or accidental wake triggers (like a mouse bump or hotkey) can fire up the CPU while the lid is closed inside a bag, S0 systems are known to occasionally overheat or drain battery.

SammyBoyd

If the previous solution does not work, look for other power saving options within the Device Manager:

• Right-click the Start button and select Device Manager.
• Expand Network adapters, right-click your Wi-Fi or Ethernet adapter, and select Properties.
• Look through the Advanced tab for properties like Energy Efficient Ethernet, Power Saving Poll, or MIMO Power Save Mode, and set them to Disabled or Maximum Performance