The usual cause for ‘Operating System not found’ is a Hard Drive failure – but it could also be caused by corrupted Master Boot Records or corrupted Windows System software. First check if your Hard Drive is still recognised by the BIOS. During startup – when you see the Vaio Logo briefly – press F2 repeatedly before the Vaio Logo disappears. Jan 30,  · Step 1 – Prepare your PC before installing Windows Step 2 – Begin the VAIO Update for Windows 10 Upgrade process. Step 3 – Install the Windows 10 Operating System. Step 4 – Install drivers, applications and utilities on your PC after installing Windows Step 1 – Prepare your PC before Installing Windows Aug 14,  · Our site is not optimized for your current browser. We recommend downloading and installing the latest version of one of the following browsers.
 
 

Operating System not found or missing: Fix for Windows XP, Vista, 7, 8, , 10

 
A premium upgrade adds free tech support and the ability to resize dynamic volumes. We moved many times since we bought this computer, so it’s anyone’s best guess where the recovery disk is at. Turn off the computer and wait 5 seconds. My thanks! If the warranty is valid, get in touch with a local ASP in your country. So, unless you have a deep knowledge on the computer, do not go for windows 8.