pcinfectedalert.com is dubious website:
pcinfectedalert.com was used by cyber crooks to get profits from online users. Once your PC is attacked by this pcinfectedalert.com, both your Chrome and Firefox will close without warning or launch new tabs constantly during your browsing activities. Excited warnings about adding a flash player or that your computer was in danger would present. Usually they had a dialog box telling you to call an Toll Free number. However, be attention, all the messages and warnings come from pcinfectedalert.com are fake which are traps to trick users for money.

One screenshot of pcinfectedalert.com