virtualbox.org

I have a Samsung R530 laptop with dual pentium processors (T4400) running an Ubuntu 14.04 host system. I am using Virtual Box 5.0.6, installed yesterday. My two Windows 7 VM's are running OK, but the Windows 10 and 8.1 ISO's (32 bits) I have downloaded from DreamSpark do not install. They both complain about missing VT-x and AMD-V. Which is true, because those processors can't support such technologies. Although I thought I could run a 64 bit host and install the 32 bit versions of Windows 10 and 8.1.

Is this so; they can not simply be installed, not even the 32 bit versions? In such a case I must use (still another) Windows 7 32bit guest, in order to test Office 365 from my campus license.
And eventually, start looking for a replacement for my laptop, which nevertheless is a great machine!

I will upload the required log files (text and image). I had to make a zip to be within the upload limits.

Windows 8.1 and Windows 10 require VT-x/AMD-V. Even the 32bit versions.

Hello Guys! I have a Dell Inspiron 14 Serie 3000 I14-3442-B10 laptop, with Intel Core i3-4005U 1.70GHz, memory (RAM) 4GB, running a Windows 8.1 Single Language like host system. I'm using Virtual Box 5.0.8 r103449, installed a few days ago.
So, I can use this VM running a Windows 7 Professional x64, no problems!
But in another machine... the things are totally different... an ASUS S46C laptop, with Intel Core i5-3317U 1.70GHz, memory (RAM) 8GB, running a Windows 10 Home Single Language like host system. I'm using the same version of Virtual Box 5.0.8 r103449.
First, a had a little problem with the VT-x at setup, was disabled. After than I changed it, I can starting the VM , but a black screen persist show me all the time: "Fatal: no bootable medium found! System Halted".

Please, someone have similar problem? Who can I help me?

"No bootable medium found" means what it says. You don't have bootable medium mounted in the VM. If you have an ISO, mount it in the VM. If you have a physical DVD, mount the host drive in the VM and insert the DVD. If you want to continue this conversation then provide a VM log file: with the VM fully shut down, right click and "Show Log" in the GUI, save "VBox.log" (ONLY) to a zip, and attach the zip here.