I was attempting to do an alongside install of ubuntu on my samsung pc. During this the pc froze. I can now get ubuntu running on it, but when I change the boot order to boot with the hitachi hdd, I come up with a black screen with a flashing _ at the top left of the screen. I thought I had a backup for win10 on an external HD, however, when I plug it in it says boot is compressed, press ctr alt del to restart and I end up with same black screen. Is win10 toast now on my samsung?