New motherboards frequently have a setting to allow virtualization in the BIOS.It allowed assigning more than 1 core and more ram when i did it. Christopher. From: Evan Koblentz via vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> To: vcf-midatlantic <vcf-midatlantic@lists.vintagecomputerfederation.org> Cc: Evan Koblentz <evan@snarc.net> Sent: Tuesday, January 12, 2016 9:41 PM Subject: [vcf-midatlantic] OT: Virtualbox problems Certainly not vintage, asking here because you guys are smart! I had Windows 7 Pro 32-bit installed on VirtualBox under Ubuntu. It worked fine, albeit very slow. Last week I bought a new motherboard, processor, and RAM. What I had was about 8 years old and only 2GB RAM. The new specs include a 64-bit processor and 16GB RAM (expandable to 64). I didn't have to reinstall anything -- plugged in my SSD and the OS and all programs worked fine, just a whole lot faster! The only thing that broke is Windows under Virtualbox. It kept saying "aborted" upon booting. I uninstalled it and replaced it with the 64-bit version. Same problem -- it aborts during boot, can't even install it. Googling wasn't particularly helpful. Any ideas?