If you're playing video games on your PC and are noticing some input lag, it might not be a hardware problem you're facing, but a well-known Steam issue.
The flaw exploits Notepad’s recently added support for Markdown, a formatting language used on websites and in files, to run malicious code on a Windows PC.
Microsoft has patched the Windows Notepad remote code execution vulnerability CVE-2026-20841, warning users to install February 2026 updates to block exploits.