This keeps popping up every time I open my pc. Is it a scam ou a virus?

This keeps popping up every time I open my pc. Is it a scam or a virus?

Definitely a scam. Open task manager and check your startup programs. This is just some scareware. Anything, even as simple as a browser extension could do it. I’d pop open something like Malwarebytes and try to remove it. Hell, I’m willing to bet it’s just a website notification. Turn off notifications and things in the browser. But it’s very likely browser related. I suggest installing an adblocker.