Microsoft says it's continuing to work on fixes for issues experienced by early Surface Book and Surface Pro 4 adopters.
The new hardware has been beset by a variety of issues since its launch this autumn. Although Microsoft has fixed problems causing screen flickering with firmware updates, device owners continue to struggle with power management.
Some users are reporting a flaw within the hibernation settings that cause power to continue running even when the lid is closed.
In a statement given to Engadget, the company says the fixes are a "top priority" and that "dedicated engineering teams" are on the case.
"We are focused on delivering a great experience to every Surface customer," a Microsoft spokesperson said.
"We know a small set of Surface Book and Surface Pro 4 customers are experiencing issues and addressing that is a top priority for us. We have dedicated engineering teams working to get updates and fixes out as quickly as possible, and we'll continue to use our Surface Book and Surface Pro 4 support forums to share new information directly with our customers as it becomes available."
Engadget also reports the issue may not be resolved until next year.
Are you having issues with your new Surface Pro 4 or Surface Book? Share your thoughts in the comments section below.