Acer aspire 5100

I have acer aspire 5100 it was working fine, suddenly they keyboard and mouse stop working so i took out hdd and put in enclosure and formatte it throgh my desktop. Now when i put back that HDD in laptop and start it says “NTDLE missing Please press Ctrl alt and del” but since my keyboard and mouse not working i cant go to bios. I bought PCMCIA usb card and attached external keyboard and mouse still unable to go to bios to set boot from cd. i cant do anything. Please help me i am stuck.

Thank you very much
yashwanta