Hey there!
Nice to meet you! I'm Randy, an Independent Advisor.
The double accent (´´) issue is usually not a virus it’s often caused by the wrong keyboard layout, a stuck key, or background software. Go to Settings > Time & Language > Language & Region and remove extra keyboard layouts like "US International," keeping only your main one. Tap the ´ key a few times to check if it’s stuck, or try another keyboard. Open Task Manager (Ctrl + Shift + Esc) and disable odd startup apps. Run a Defender Offline Scan or AdwCleaner for deeper malware checks. If it only happens in Word, check the language and autocorrect settings.
Best regards,