My PC started acting up last night, slowing down and error messeges, so I decided to delete some of the junk programs I have. and i must have deleted something important, because when I tried to turn my computer on this morning I got this error messege "NTLDR IS MISSING, PRESS ALT+CTRL+DEL TO RESTART " I tried to googling it on my friend's pc but I couldn't find any thing that applied to me, and besides they all assume I have the windows CD which i don't, so please somebody help me with my problem and assume I know little about computers.