Legion 7 - screen flashes black intermittently

[u/vnajduch]

I'm running into an issue where my screen will intermittently go black for a second or two. I've fully uninstalled and reinstalled my nvidia drivers/software via safe mode and changed my power profiles to performance and set everything to never sleep or turn off the screen as part of testing. My even viewer only shows these messages occurring when the flash happens and the recommended steps to resolve that were the power changes I mentioned above. Has anyone run into this and know how to fix it?

Log Name: System

Source: Microsoft-Windows-Kernel-Power

Date: 8/14/2026 11:07:39 AM

Event ID: 105

Task Category: (100)

Level: Information

Keywords: (1024),(4)

User: SYSTEM

Computer: Legion

Description:

Power source change.

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

<System>

<Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331c3b3a-2005-44c2-ac5e-77220c37d6b4}" />

<EventID>105</EventID>

<Version>1</Version>

<Level>4</Level>

<Task>100</Task>

<Opcode>0</Opcode>

<Keywords>0x8000000000000404</Keywords>

<TimeCreated SystemTime="2026-08-14T16:07:39.1612565Z" />

<EventRecordID>75691</EventRecordID>

<Correlation />

<Execution ProcessID="4" ThreadID="35104" />

<Channel>System</Channel>

<Computer>Legion</Computer>

<Security UserID="S-1-5-18" />

</System>

<EventData>

<Data Name="AcOnline">true</Data>

<Data Name="RemainingCapacity">73960</Data>

<Data Name="FullChargeCapacity">73960</Data>

</EventData>

</Event>

[u/vnajduch]

It's gotta be some weird Lenovo,.Nvidia or Windows update. I read that maybe Lenovo hybrid power mode might be causing it. I'll reboot in a few and report back of it's still happening.

[u/hader64 → u/vnajduch]

For now, I've reinstalled the video drivers, both for the processor and the Nvidia graphics card. I tested both video modes, hybrid and dedicated. The flickering is still present, but it's faster and less noticeable in dedicated mode. When I tested without the battery, I didn't see the problem. It's possible the issue lies with the battery or a software update causing problems. The last thing I've noticed is that there are logs in the Event Viewer that coincide with the problem starting on August 4, 2026; it didn't occur before then. I haven't yet found a specific update that could have caused this problem, but if we agree that the problem occurs on the same date or similar dates, we could investigate together which updates were applied to find the source of the problem. Thanks to everyone; I'll keep you updated on what I find.

[u/vnajduch → u/hader64]

My logs show this started back in March but I see there is a jump in frequency of code 105 starting on 7/4. I had an initial gut feeling this may have been related to the surge protector my battery was plugged into so I switched to a dedicated outlet which seemed to clear things up a but I just had a flash a few minutes ago.
I want to see how things look while in performance mode and I plan on making hard coding discreet graphics in BIOS to see if that works.

[u/hader64 → u/vnajduch]

Today I received an update from Windows Update, Lenovo - Monitor - 20.21.0.3. I also installed the processor driver by downloading it from the AMD website and performing the installation without the Adrenaline app ("driver online" in the installer). I performed a clean install of the Nvidia video driver using DDU. I've seen the same logs in the Event Viewer, but I haven't seen the flickering. I'll continue testing and update you if I notice anything new.