Sony VAIO E Series windows 8 downgrade it to Windows 7 [Solved/Closed]

Rednex 1 Posts Tuesday January 15, 2013Registration date January 15, 2013 Last seen - Jan 15, 2013 at 11:56 PM - Latest reply:  joe
- Jul 22, 2013 at 04:22 PM
I bought sony vaio E Series /Model:sve14125cxw/ with windows 8. And I want to downgrade it to Windows 7. Problem is when I pressed red Assist button and choosen start from media. I inserted my windows 7 installation disk with boot in CDROM. But giving error OPERATING SYSTEM NOT FOUND.
Answer is how to downgrade from windows8 to windows 7, how to boot from bootable disk.
Sorry my bad english and thanx for your answer.
Sincerely, Erdenebadral.B

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4 replies

Best answer
Thank you
Change an option from BIOS from UEFI to Legacy

Thank you, Saif 10

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hi Saif ,

it worked for me!!!!!!
thanks pal
debrataprince 18 Posts Thursday January 24, 2013Registration date January 25, 2013 Last seen - Jan 24, 2013 at 05:43 PM
Thank you
u need to windows7 clean installation. have a nice day.
Thank you
As far as I know the E14's operating system cannot be downgraded / clean win 7 install meaning that Sony has not published any drivers for Win 7 for that specific machine. If you have one with the touchscreen... it's very likely that you'll lose any touchscreen functionality.

As confirmed by Sony's support page :