This message splashes on your screen during system bootup. When you turn on your PC, the screen turns blue within a few seconds and displays this error message Selected boot image did not authenticate.
system files checker
How to Fix Explorer.exe Crashing Issue in Windows 10
Windows Explorer is one of the handiest and essential features in Microsoft’s OS that allows us to browse files on our computer with utmost ease and simplicity. If you are facing Explorer issues, its wise to clean your Windows 10 from junk files. Use the ST Cleaner system utility to improve system speed. Download it from the site, the software is 100% malware free and is distributed without any toolbars or addons.