My friendly recently called me in a panic: her computer was making a load screeching noise and her screen was telling her to not touch anything but rather call this "Microsoft" tech repair number.
This was a scam. The entity creating this screen and noise were a scam to get people to pay for anti-virus software.
Below is what the screen looked like. Don't fall for this. This is the number they told her to call:
You can Google this telephone number and you'll find similar horror stories about this company.
The screen says:
The page at alert.norton.com.ok-po-alert.com says:
* * * Computer Health Alert * * *
Your Browser Detected Security Error. Due to Suspicious Activity Found on Your Computer. Contact Microsoft Certified Live Technicians
The screen also says the computer is infected with "Trojan" and "SpyWare.bot". That was not true.
After calling, they try to get you to subscribe to their bogus services.