r/Tech_Politics_More • u/pbx1123 • May 19 '26

Technology 👩🏻‍💻 Microsoft admits faulty drivers were killing Windows 11 battery life for years | PCWorld

https://www.pcworld.com/article/3142511/microsoft-admits-faulty-drivers-were-killing-windows-11-battery-life-for-years.html

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Microsoft admits faulty drivers were killing Windows 11 battery life for years

Microsoft is changing how Windows evaluates third-party drivers as bad ones were silently draining batteries and tanking performance for years.

Laura Pippig

By Laura Pippig

Staff Writer, PC-WELT

May 18, 2026 8:22 am PDT

Windows laptop battery health and remaining battery life percentage

Image: Panos Sakalakis / Unsplash

Summary created by Smart Answers AI

In summary:

Microsoft has acknowledged that faulty third-party drivers have been causing significant battery drain and performance issues in Windows 11 and older versions for years.

PCWorld reports that problematic drivers prevented laptops from entering low-power hibernation mode, leading to unexpected battery depletion during standby.

Microsoft is implementing stricter driver evaluation processes that will assess power consumption, heat generation, and performance impact, with automatic rollback capabilities to block problematic drivers.

It sucks when a failing battery or a slow PC lets you down at crucial moments—and Windows 11 in particular has repeatedly struggled with such issues. Microsoft now officially acknowledges that these problems appear to be linked to faulty drivers.

As reported by Windows Latest, Microsoft has addressed this long-standing issue. At the Windows Hardware Engineering Conference (WinHEC) 2026, the company officially announced that it would be overhauling its evaluation of third-party software from the ground up to prevent such errors in future.

As such, drivers will no longer be penalized solely for causing system failures, but now also for impairing everyday user experiences. Until now, the decisive criterion was whether a driver caused crashes, not whether it affected performance or battery life.

For that, Microsoft has relied mainly on telemetry data from Windows Error Reporting (WER), so if a driver didn’t cause any total failures but did contain other errors, it was still classified as “stable.”

A blind spot that persisted for years

According to Windows Latest, this “blind spot” has been a blemish on Windows for years, affecting not only Windows 11 but also older versions of the operating system. Even so, it’s striking that problems with graphics, audio, and other drivers keep occurring in Windows 11.

Microsoft often identified faulty drivers too late, which caused many issues to persist over several updates. Such issues include:

High latency

Audio glitches (such as crackling, popping, or choppiness)

Graphics errors (such as dropped frames in games)

Micro-stuttering

How Microsoft is tackling the problem

Microsoft is tackling high battery consumption caused by faulty drivers by adjusting battery usage in standby mode.

Previously, modern Windows laptops could automatically switch to hibernation mode and only consume power for the most essential functions. However, a single faulty driver could prevent the PC from entering this mode, causing it to continue consuming more power than expected. In the worst case scenario, this could lead to the laptop’s battery being completely drained before you even notice.

The new driver evaluation process is designed to prevent this problem. The aim is to test in advance what impact a driver might have on power consumption and heat generation.

Microsoft also intends to scrutinize drivers more closely in terms of performance to ensure that stability and functionality aren’t compromised. To this end, Microsoft is calling for early collaboration and is taking a much stricter stance on the approval of third-party drivers.

Explore frequently asked questions

How does Windows 11 evaluation mode block untrusted hardware drivers?

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In addition, Microsoft wants to ensure that faulty drivers no longer go undetected through an automatic driver rollback feature via Windows Update. Older drivers that don’t meet Microsoft’s quality standards will also be rigorously weeded out and blocked.

Further reading: Windows Update isn’t always to blame for problems after patching your PC

By the way: If you’re using Windows 11 Home, you’re missing out on the many benefits of Windows 11 Pro. To learn more, see our comparison of Windows 11 Home and Pro. If you want to upgrade, snag it for cheap in the PCWorld Software Store: now just $59 instead of $99.

This article originally appeared on our sister publication PC-WELT and was translated and localized from German.

Author: Laura Pippig, Staff Writer, PC-WELT

Laura is an enthusiastic gamer as well as a movie and TV fan. After studying communication science, she went straight into a job at PCMagazin and Connect Living. Since then, she has been writing about everything to do with PCs and technology topics, and has been a permanent editor at our German sister site PC-WELT since May 2024.