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Laggy, stutter and glitchy pc after game crash

After playing League of Legends, my PC started lagging, stuttering, and glitching. The game crashed to a black screen, and I had to restart using the case button. While simple tasks like opening Chrome seem fine, running games or programs causes severe slowdowns, with the cursor becoming jumpy and showing the spinning blue ring. Even browser games run poorly at only 20 FPS.

Here’s what I’ve noticed:

  • The "Activate Windows" watermark disappeared after the crash.

  • When stuttering happens, audio glitches too.

  • Programs and even the Start menu take a very long time to load.

  • The CPU is consistently running at almost 100%.

Specs:

  • Processor: Ryzen 5 3600

  • GPU: Zotac RTX 3070

  • PSU: FSP HV Pro 650W 80+ Bronze

  • RAM: T-Force Delta R 16GB x2

What I’ve tried so far:

  • Ran a system file scan

  • Set the power plan to High Performance

  • Disabled SysMain service

  • Cleared temp files and did a disk cleanup

  • Renamed GameBarPresenceWriter

  • Updated graphics drivers

  • Ran a Windows Security quick scan

  • Unplugged external storage

  • Disabled NVIDIA HDMI audio

None of this has worked, and I’m really frustrated. Any help would be greatly appreciated!

Hello Kenzie MF,

Thanks for reaching out here in the Microsoft Answers Community.

Please do not disable system services or rename system files, as it will make break certain system functionalities.

Based on the description, it seems that the issue comes from hardware. If you have any overclocking or undervoltage (including memory XMP) configured in the system and in BIOS, please revert them and see whether the issue persists.

Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology.

If you are going to modify BIOS Settings, please back up all your personal files first to ensure you do not lose data.

If the issue persists, we can check the dump files and the power logs for a clue. To do so, go to file explorer->This PC->C drive->Windows->minidump, and upload the DMP files there to a file-sharing service for our analysis. Then, right-click Start->Terminal/PowerShell/Command prompt (Admin), and enter the following commands:

cd \
powercfg /sleepstudy

It should output an HTML file at the root of the C drive. Upload it as well.

We look forward to your response.

Best Regards,

Sheng G. - MSFT | Microsoft Community Support Specialist

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Hello,

I have not received the message from you yet. If there is anything more that I can do for you or if anything is unclear, please do not hesitate to let me know.

Best Regards,

Sheng G. - MSFT | Microsoft Community Support Specialist

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Hello,

I have not heard back from you in 96 hours. If you need further help at this point, please create a new thread to discuss those concerns.

Best Regards,

Sheng G. - MSFT | Microsoft Community Support Specialist

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Question Info

Last updated April 20, 2025 Views 84 Applies to: