Use another working computer to download Farbar Recovery Scan Tool and save it to USB flash drive. What can I do to install an operating system and remove the virus? I can ctrl+alt+del go back to Acer screen or restart manually. Where it goes to operating system not found black screen. Held power button for over 30 seconds and let my laptop sit unplugged without battery or ram for 24 hours.

I used alt+f10, f2, f12, Del, shift+f8, holding esc,f2,or del while powering up don't work. I've tried holding the power button down to make sure it was off. There is no grey bar at the bottom displaying f2 and f12 options now. The next day my laptop powered off while using it and I get the message 'no operating system found', it also gave me the Acer logo that I would get before booting into windows 10 that used UEFI. Windows defender identified it as Neshta A Trojan Virus. I managed to install windows, boot into safe mode and run avg Neshta removal tool. Previously the laptop upgraded to windows 10 and used UEFI. It would click, to the extent I see black dots where it clicks and kept bringing up OSK and randomly typing. During the installation I was fighting the virus. Then I switched boot in bios to legacy and boot priority to CD and reinstalled windows.

I wanted to make sure it was gone so I used diskpart grabbed my acer windows 8 CD recovery. I had neshta A virus and used avg neshta to remove it.

Avg neshta remover