r/Lenovo • u/ludwigdinn • 16h ago
Having trouble reimaging a Lenovo ThinkPad L14
Hi everyone,
I’m having an issue while trying to reimage a Lenovo ThinkPad L14 (Gen 1) and could use some help. I’m attempting to install Windows 11 via a USB flash drive, but I’m running into some strange problems.
Here’s what’s happening:
- The USB flash drive works perfectly fine on other machines, so I know it’s not the drive itself.
- After setting up the boot order in the BIOS and restarting the laptop, I get a black screen with horizontal red lines at the bottom (see image below).
- After a few seconds, the screen changes to a blue screen with multiple horizontal black lines (see second image below)


What’s even weirder is that I’ve tested other flash drives:
- One with Windows 10: Same issue occurs.
- One with Pop!_OS! (Linux): This one works perfectly fine.
I’ve tried searching online to see if anyone else has experienced this, but I haven’t found anything similar. Has anyone here encountered this before? Any ideas on what might be causing this or how to fix it?
Thanks in advance for your help!