It is possible.
It is when the computer out of the blue gives you a multilanguage screen asking you to force restart immediately, and nothing improper has happened to peripheral connectivity, that's when I would be more concerned.
It is when the machine automatically shuts itself off when Energy Saver wasn't support to, that's when I would be more concerned.
If you get a message saying you need to clear a virus off your machine, chances are you just need to take these steps:
- Command-option-escape to force quit any web browser.
- Restart the web browser with shift key, and load the homepage, and not the last loaded page.
- If you have any saved passwords on your web browser go through the preferences and record them some place securely away from the computer, and clear caches and cookies, and remove extensions from the web browser.
- Do the same to all web browsers that could be impacted.
Do not install any cleaning, anti-virus, firewall, or VPN software (with exception for joining a school or company network). If you are browsing in a public wifi, you can use incognito browsing for pretty much the same level of security.