Most people will never need to think about Secure Boot certificates . They live deep in your PC’s firmware, do their job silently, and have been doing so since 2011 without asking for much in return. But that quiet run is about to end. The original certificates expire in June 2026, and while Microsoft is pushing updates automatically to many machines, plenty of PCs are going to miss the memo entirely. Here’s how to find out if yours is one of them — and what to actually do about it. Step 1: Check whether your PC already has the updated certificates Before you do anything else, find out where you stand. The quickest way is through PowerShell. Open the Start menu, type  PowerShell , and select  Run as administrator . Once it’s open, paste this command exactly as written and hit Enter: Shimul Sood / Digital Trends ([System.Text.Encoding]::ASCII.GetString((Get-SecureBootUEFI db).bytes) -match 'Windows UEFI CA 2023') You’ll get back either a  True  or a  False .…