can you use an external monitor to restore factory settings?

<span style="margin-top: 0px; color: rgb(20, 20, 20); font-family: Arial, Tahoma, 'Trebuchet MS', Helvetica, sans-serif; background-color: rgb(246, 246, 246); font-size: 12px;"><span style="font-family: 'Trebuchet MS';"><span style="color: rgb(68, 68, 68);">I HAVE A <a href="http://www.surfcanyon.com/search?f=slc&q=ACER&p=wtigck" target="_blank" class="externalLink" rel="nofollow" style="color: rgb(47, 79, 115); border-top-left-radius: 5px; border-top-right-radius: 5px; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; padding: 0px 3px; margin: 0px -3px; background-image: none; background-color: rgb(246, 246, 246); box-shadow: none; -webkit-box-shadow: none; -webkit-transition: color 0.2s ease-in; font-family: Arial, Tahoma, 'Trebuchet MS', Helvetica, sans-serif; font-size: 13px; line-height: 20px;"><span style="font-size: 12px;"><span style="font-family: 'Trebuchet MS';"><span style="color: rgb(133, 187, 35);">ACER</a><span style="color: rgb(20, 20, 20); font-family: Arial, Tahoma, 'Trebuchet MS', Helvetica, sans-serif; background-color: rgb(246, 246, 246); font-size: 12px;"><span style="font-family: 'Trebuchet MS';"><span style="color: rgb(68, 68, 68);"> ASPIRE 5720 AND MY LCD IS SMASHED. SO IVE HOOKED IT UP TO AN EXTERNAL MONITOR SO I CAN USE IT AGAIN BUT I RESTORED THE MEMORY TO FACTORY SETTINGS BECAUSE I GOT A VIRUS AND I DIDN'T TAKE INTO CONSIDERATION THE FACT THAT MY EXTERNAL MONITOR WOULD STOP WORKING AND NOW THAT I'VE RESTORED THE LAPTOP I DON'T KNOW WHAT TO DO BECAUSE MY EXTERNAL MONITOR ISN'T WORKING ANYMORE AND I JUST REBOOTED THE LAPTOP. I'VE ALREADY TRIED REBOOTING IN SAFE MODE BUT A MESSAGE POPS UP SAYING WINDOWS CANNOT INSTALL IN SAFE MODE. THE FN+F5 DOESN'T DO ANYTHING EXCEPT MAKE MY LAPTOP SCREEN TURN ON AND OFF, BUT STILL NO SIGNAL ON THE EXTERNAL MONITOR.