Can go on youtube?

This issue occurs if the Computer is infected by any virus. Scan the Computer by any good Anti-virus/Internet Security application (Kaspersky or ESET or Norton) to detect and remove the virus.

If you very familiar with the Computer then:

Open the Task Manager, close (End Task) any unknown/malicious process running in background under your User Account (like svchost running under your User account only not under SYSTEM or LOCAL SERVICE).

Then try opening YouTube.

I suggest that you better scan your full Computer with any good and updated AntiVirus application to resolve the issue.

If the AntiVirus application is unable to detect any virus in the Computer then try opening the YouTube in the SAFE MODE WITH NETWORKING to determine whether the Computer is infected with the virus.

If you are able to open the YouTube in the SAFE MODE WITH NETWORKING then the Computer is definitely infected with virus then reinstalling the Operating System is the only option to remove the virus from the Computer to resolve the issue.