My windows, the fender security has disabled my computer. How do I get it unlocked?

It sounds like you may be experiencing a tech support scam, which is a common issue where scammers use scare tactics to trick users into believing their computer is disabled and that they need to call a support number. Microsoft does not send unsolicited messages or make unsolicited calls to request personal information or to fix your computer.

Here are some steps you can take to address this situation:

1. Do not call the number provided in the pop-up. This is likely a scam.
2. Close the pop-up: If you cannot close it normally, try pressing Ctrl + Alt + Delete to open the Task Manager and end the browser process.
3. Run a full scan with Microsoft Defender Antivirus to check for any malware that may have been installed.
4. Reset your browser settings to remove any unwanted extensions or changes made by malware.
5. Change your passwords if you have provided any personal information to the scammers.
6. Monitor your accounts for any unusual activity.
7. If you believe your computer is still compromised, consider resetting it to factory settings.

For more information on how to protect against tech support scams, you can refer to Microsoft's guidelines on this topic.

References:

• Tech support scams
• How to protect against tech support scams