Question Lenovo S330 - This is now a matter of principle

Jan 23, 2026
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Granted... It is not necessarily worth the time and effort, but at this point, I REALLY want to solve this. I have a "Lenovo Chromebook S330 Laptop, 14-Inch FHD Display, MediaTek MT8173C, 4GB RAM, 64GB Storage, Chrome OS". Two actually. One is working the other is stuck in in Developer Mode. When I insert a correctly formated USB recovery stick, the screen blanks out although the USD keeps blinking, indicating it is powered. I have let the USB stick inserted overnight, just to determine if the process is going slow. No dice.

I have also pulled the battery to try and set. I think I have tried every key combination the internet provides for both getting in to and out of Developer Mode.

Please, HBO (Help a brother out). I have now invested too many hours of my life in this, to just give up.
 
It was stuck in that when I turned it on. When I asked my kids who and how, the classic "not me" was the answer. So to answer you - I have no idea. Sorry
I fully understand the kid response. Often, this happens when someone tries to reload the system (to bypass restrictions, like those set by schools who use a lot of Chromebooks....or possibly even <gasp> parents).

Have you tried anything like this?

https://support.google.com/chromebo...-mode-when-trying-to-recover-chromebook?hl=en
 
Yes, I have tried that option. I have tried working through the Chromebook C330/S330Hardware Maintenance Manual as well. At first I thought the keyboard wasn't working because I wasn't able to get a response, but from the insert USB screen, the arrow keys are still working.

Other thoughts?
 
So this isn't working either, right (source Gemini AI response to Google query)?

To exit developer mode on a Lenovo Chromebook S330, restart the device and press the Spacebar when the "OS verification is OFF" warning screen appears, then press Enter to confirm. This action will re-enable OS verification, factory reset the device, and delete all local data.