:knock: Hello techspot community! Am a new member of this Honorable Forum and, of course, the purpose of me joining you is because I am experiencing problems. 1st. this Dell machine/Windows 2000 collapsed and was restored to a mediocre performance due to a display driver not been installed. 2nd. then it stopped booting and now 3rd I get "Error loading operating system". I have checked (F2) the BIOS booting sequence and found it identical to the one of another Dell laptop in perfect working conditions. When testing the defect machine in F12 to be booting from a CD (another OP such as W98SE) the Setup screen would appear and Wxx could be normally installed. Of course, I want to keep Windows2000Prof because of the many applications and files installed therein although I wouldn't mind having 2 OP's on this machine to choose at login stage Any good suggestions on how to solve the immediate problem..."Error loading operating system"... and then to repair the display driver issue or the OP as a whole? I was advised to do some Windows repair, however, as I cant find the actual CD of this rather old laptop I'm now trying to purchase the necessary software. I thank you for any help or assistance you may be able to offer to me.