Installing windows 7 x64 [Closed]

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 Melie -
Hello,



my laptop which is a Sony Vaio 64 bit, model: sve15121cvb, 2gb ram, and it came with windows 8 pre-installed...

I tried to refresh it to its factory defaults through the "Assist" button and that's where the matter started...it said "Error the drive where the windows is installed is locked"...got tired of that and decided to format the HDD through command prompt and install windows 7 x64 from a dvd disc that I recently bought...now the problem is; when I install win.7 from the dvd I get an error that says "The required cd/dvd drive device driver is missing. If you have a driver, floppy disk, CD, DVD or usb flash drive, please insert it now"...where did I go wrong?

1 reply


You should go into the BIOS of the computer (F2 or DEL) and change the BIOS type from UEFI to legacy.

try installing again.
Thanks for the quick reply, Yes I did that when it did not want to boot the disc...so I changed my BIOS settings from UEFI to Legacy then it detected the disc...then it gives the error at the installations 1st step which is "Collecting information"...
Blocked Profile > Melie
Have you tried resetting BIOS to default settings?

Have you turned off secure booting?

Are you 100% sure your CD is working?
> Blocked Profile
Yes, the disc works 100% fine, 2days ago me and a friend tried it on another computer & it installed with no problem...I just did reset my BIOS and set it to boot from the disc, changed it from UEFI to legacy...still no change, same error

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