PC is a Dell Dimension XPS T550 with one drive partitioned to C,D and F. It had Win 98 installed on the C, and Win 2000 Pro on the D drive. I removed the Win98 installation and must inadvertently have deleted essential bootup files because on a reboot I got the message "NTLDR missing". Tunred the PC off and restarted it and now it simply displays the Dell splash screen and won't read the floppy, CD drive or the C or D drives and just sits doing nothing. Can anyone suggest a solution - am I going to have to remove the drive and add it to another PC to copy the operating system onto it - or has the PC died forever. Help and advice would be greatly appreciated.