I got hit with it too. It showed up as a blinking cursor with a spade in the lower left corner.
I "updated" Classic Shell on a server running Server 2012 R2, installed some Windows updates, rebooted, no go.
I "updated" on one of my personal computers. Same thing. I knew it wasn't drive failure at this point. Classic Shell was the last thing I had installed a couple hours earlier before I ended up rebooting.
How I fixed it: Applies to NT version 6 only! (Windows 7, 8, 8.1, Server 2008, 2012, 2012 R2. NOT 10)
I had Linux Mint 18 on a flash drive from a previous installation (lucked out).
Booted up Mint USB.
Open the Menu>Administration>GParted and see if you hard drive shows any partitions. You may luck out that your partition table wasn't cooked and only have to skip down and rewrite MBR. If it shows your drive as unallocated, continue with instructions.
Open terminal
run "sudo apt-get install testdisk" without quotes in terminal to install testdisk
(AT YOUR OWN RISK)
run "sudo testdisk"
analyse disk, made sure it found all of the correct partitions, wrote the partition table.
reboot and removed Mint USB.
booted from Windows installation USB/DVD corresponding to the version of Windows that is installed on the computer (for me, Server 2012 R2 and Windows 7)
When it gets to the start installation screen, push Shift + F10 to open command prompt
(AT YOUR OWN RISK)
bootsect /nt60 SYS /force /mbr
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd (wait for it to find your installation and type y for yes)
exit (to close cmd)
reboot
Let it log into Windows.
May be good idea to remove any Classic Shell installations, download a clean copy provided by Ivo, and reinstall it.
Also probably good idea to run scan with something like malwarebytes to make sure you're clean.
sorry for the poorly written post. I was pulling my hair out for an hour until I found that someone else had the same problem. Hopefully I help someone.
♠_edit:added instruction to check to make sure partition table truly is destroyed before attempting to overwrite it. You don't want to risk losing data that isn't "gone."thanks for danooct1 shoutoutdanooct1 also made the comment in his video that the file size differs between the legit one and the fake one. The real one is around 6.88 MB and the fake one is about 6.81 MB. The fake one also doesn't have a signature which may trigger Windows Smartscreen.Ugh... I tried to install test disk, and it says unable to locate package test disk
I tried updating Ubuntu, even though I got the latest from the website, and it says: error while moving old database out of the way. app stream cash update Failed.
Omg what do I have to do to get this going...