Hi Guys, just want to update this post for other users (and for my own future reference
) as I didn't seem to find anything similar searching this forum. Following instructions from another forum (
link), I have wiped my SP3 Win 8.1 recovery partition and updated it with a Win 10 recovery partition (my win 8.1 partition was corrupted. You can download Win 8.1 or Win 10, I chose Win 10 as its my preferred OS). Note that my SP3 was previous upgraded to Win10 using the free upgrade from MS, so the activation key is stored on MS servers. Using the recovery image downloaded from the first post, do the following (quoted for future reference in case the original source is removed):
Once you've got the recovery image (which you extract on your local pc and then copy to a USB pen) it can either be used from within Control Panel or as part of the boot sequence (if you formatted the USB pen as FAT32) to reinstall the Operating System. If you use the USB pen with the recovery image from the boot sequence you can actually completely clean and replace all the partitions on the main drive (so its just like new). This option reinstates the recovery partition of the Surface Pro.
The steps are:
1) Start with the Surface Pro 3 turned off
2) Hold down the "volume-down" button, and press and release the power button to turn it on.
3) When the surface logo / text appears on screen, release the "volume-down" button. It should then boot from the USB. If it doesn't the USB memory stick is not configured correctly (check its FAT32)
4) Select your language settings
5) Click Troubleshoot -> Advanced Options -> Command Prompt
6) Type "Diskpart" and press enter
7) Type "select disk system" press enter - this is a system action that automatically selects the device on which the operating system is installed
8) Type "clean" press enter to erase the disk
9) Type "exit" press enter
10) Turn off the device by holding down the power button
11) Hold down the "volume-down" button, and press and release the power button to turn it on.
12) When the surface logo / text appears on screen, release the "volume-down" button. It should then boot from the USB.
13) Select your language settings
14) Click Troubleshoot -> Reset your PC
15) Click Next and select to "Yes, repartition the drives" - this is the step that replaces the recovery partition as well as the OS etc.
16) Follow the prompts.
(Thanks to Microsoft support for guiding me through this process)
Note that at step 14, my process was a bit different. I had to choose the "recover from drive" option, then follow the prompts and choose the option to remove all files, in the bullet descriptions it will state that it also installs the recovery partitions. After the installation completes and restarts, the BIOS will ask for a TPM reset, as stated in this HowToGeek page (
link). I pressed f12 to clear my TPM, not exactly sure what the effects are, note however that bitlocker encryption is turned off for the windows drive, so you need to manually turn that back on after the window installation.
I think there is a good chance to brick your device, so proceed with caution. I only did this as my recovery partition was corrupt, otherwise I would go the long way round with a factory reset with the recovery partition to windows 8.1 and then a manual ISO upgrade to windows 10.