Windows Upgrade Help and more

Yeah, that's a good call. Also, check for any pending driver updates in Windows Update, especially for your chipset and storage.

+1 I had the same problem. I ended up adding another 4GB stick, and the check passed immediately. Let me know if that works.

This. Yeah, that's a solid breakdown. One extra tip: if you see the "Non-paged" pool getting unusually high, it can sometimes point to a driver keeping too much data in fast RAM.

What are your laptop's specs, like RAM and processor?

Hi there! That's a great question, and it's always smart to check before installing a Dev channel build. Yes, **Build 26220.7535 is a legitimate preview build** for the Windows Insider Dev channel. This specific version (the .7535 portion) is a cumulative update on top of the main 26220 build ...