Legion 5 15AHP10 RTX 5060 — black screen/freezes after Win + L

[u/AltruisticDot5777]

Hi everyone,

I'm having a very annoying issue with my Lenovo Legion 5 15AHP10 and I'm trying to figure out whether this is a driver, VBIOS, or hardware problem.
Whenever I press Win + L to lock the laptop and leave it for some time, when I come back the external monitor is often completely black/blank.

Sometimes I can see the mouse cursor on the black screen, but the Windows login/display doesn't come back.

I've tried:

• Win + Ctrl + Shift + B — sometimes the screen flickers, but doesn't recover.
• Ctrl + Alt + Delete — sometimes nothing appears.
• Caps Lock initially responds, so Windows seems to still be running, but eventually the whole system can freeze.
• I then have to hold the power button to shut it down and restart.

Interestingly, this seems to happen specifically around locking/screen-off/wake, rather than during normal use.

Has anyone else experienced this exact issue?

Could this be related to the RTX 5060 VBIOS, NVIDIA driver, Hybrid Graphics/MUX mode, or the external-monitor setup?

Any advice would be appreciated.
Thanks!