Windows 10: Shut down my PC when I received a scam warning from "Microsoft ". When restarting, new...

Shut down my PC when I got a scam warning from Microsoft. When restarting, a new homepage appears. I don't want to sign in when prompted. Should I?

:)

 

Random shut down and restart??

Computer: Intel (R) Pentium (R) Dual cpu
E220@2.406hz
2.42 GHZ, 2.00 GB of RAM
Windows xp

Ever since I replaced the fan (with heat sink) the computer has randomly shut down and then restarted, at first during streaming, and now, will shut down and restart anytime. I tried to replace the graphics card to no avail. *Confused *Mad

One suggestion was to replace the RAM.

Any suggestions on how to repair my computer?

 

Shutdown and Restart with no warning.

Hi Steve,

User profile corruption is one of the possible reasons why your computer keeps on shutting down. To troubleshoot the issue, we suggest creating a new user account and see if the same issues will occur on a different user profile. To do this, simply follow
the steps below:

• Select the Start button, then select Settings > Accounts > Family & other people >Add
  someone else to this PC.
• Enter a user name, password, password hint, and then select Next.

Once done with the steps, let us know how it goes so we can assist you further.

 

Scam warnings

Follow either my link, or Don's steps, in this thread for getting rid of popup tech support scams. If you follow my link, no need to run those programs since not infection.

Edit: fixed broken link

Redirecting

Info on tech support scams and how to avoid them:

Tech Support Scams
How To Spot, Avoid, and Report Tech Support Scams

Tech Support Scams use new Tricks to Hold Browsers Hostage
Tech Support Scams use new Tricks to Hold Browsers Hostage

Beware of US-based Tech Support Scams

Beware of US-based Tech Support Scams | Malwarebytes Labs

PSA: Tech Support Scams Pop-Ups on the Rise

https://blog.malwarebytes.org/fraud-scam/2014/11/psa-tech-support-scams-pop-ups-on-the-rise/