Begin Dictation.Here are some additional information. Whenever a Dell OptiPlex the soul – being refurbished, it almost always means that the vendor guarantees that the operating system has been authorized by Microsoft. The operating system installed on your bill 755 was Windows 7. Is that right? Your Dell computer will have a sticker somewhere on the side or back of the case. The sticker will indicate that the software installed on that computer came from Microsoft and there is a number on it that indicates it is an authentic version of Windows that Microsoft has approved for use on a Dell computer. Your Dell might possibly have to stickers on, one for the original Windows version and the second for the version that the vendor used to update your Dell to the current version of Windows.
You can go to the Dell website and look up more information about how to find the sticker that has the product key on it. When you reinstall Windows 7, you will need to use that product key and you'll have to use the same version of Windows 7 that goes with the Dell Computer. You should have made a copy of the operating system when you first got the machine. Also, there may be a recovery partition on the hard drive that is still in good condition.
Sometimes what happens is the boot sector on the hard drive becomes corrupted or for some other reason it cannot be read by the computer when you start the thing up. In some cases, you can turn off the computer and wait a few minutes and then try again. I have often had that happen to me. And if that should happen to you you want to find out right away what is the proper way to make a backup copy of the operating system.
Sometimes cards drives just go completely out and there's nothing you can do. However, it only takes a small defect in the early part of the boot process to make the whole thing fail. The boot sector is a very small area on the outer edge of the disc itself. Sometimes, for reasons that are too technical, that area of the disk might perceive more where than other parts of the disc. In some cases it is possible to repair the disk by simply doing a new installation from some type of recovery media.
It would be worth your while to contact the Del company and see what provisions they have for getting you a new copy of the Windows 7 version that belongs on your computer. I'm not able to tell you that the price might be. But don't be surprised if the would ask something like $25 or so to ship the disc out to you.
But the most important thing is to verify that your Dell computer was properly refurbished and does have the authentic sticker on it that came from Microsoft.
Here is a link to a page on the new Dell website that explains how to find the sticker on your Dell computer.
End of dictation.http://www.dell.com/support/article/us/en/4/SLN289661/where-is-the-certificate-of-authenticity--coa--label-located-on-dell-laptop-computers-?lang=ENEDIT: It is OK to use a copy of the OEM Dell verions of Windows 7 you get from someone you trust, like a riend or relative. The COA makes you alegal user.