virtualbox.org

I installed Virtual Box on Windows 8.1 SONY 14A Laptop (i7, 64 bit) and when I want to create a new virtual machine with name RAC1, Type is LINUX, & Version I could find is only "ORACLE 32 bit". Why is it that I could not find ORACLE 64 bit. I enabled virtualization technology in BIOS based on recommendations from BLOGs. I did delete and reinstall the Oracle Virtual Box. It is same problem again.

make sure Hyper-V is not enabled in the Host.