Updated my laptop and now it wont go to log on scene

[Sunshineb11]

HP Pavilion x2 Detachable 2-in-1 Laptop Tablet,10.1? HD IPS Touchscreen Intel Quad-Core Atom x5-Z8350, 32GB eMMC SSD, 2GB RAM, 802.11ac, Wifi, Bluetooth, Windows 10-Silver

I've recently updated my 2 in 1 yesterday to windows 10. I used an external SD card cause my laptop doesnt hold alot of storage. But now when you turn on it says "undoing changes". Its been doing that since yesterday. 

[WAWood]

@Sunshineb11 

I'm sorry no one has responded to you before this -- but it's likely because they didn't want to pass along the bad news that your PC is now basically unusable due to the Windows Upgrade having failed during the process and NOW, being unable to restore the previous, working state of your PC.

With a PC stuck in this mode, the only working solution is usually to do a Clean-Install using Windows install media, and that will erase everything you currently have on the PC.

SInce you were likely unable to boot from the SD card, I'm presuming you did an in-place Win10 Upgrade from a prior OS, right>  Was that Win7 or Win8?

[Sunshineb11]

I believe it was windows 8. how do i do the clear install