virtualbox.org

Hi. I've got virtualbox 2.4 in my Windows8 pc with 8gb RAM and AMD Dual Core E-500. I'm trying to install Ubuntu with 2GB RAM but it runs too slowly and I can't install it. What can I do? How can I get higher speed or what can I do to solve the problem?

Post the guests log file (as an attachment)
See Online Users Manual for the location of the file.

List the version of Ubuntu you are installing.

I'm trying to install Ubuntu 11.04. Is very important for me to solve the problem please!! It still about 10 minutes and this is the log.

Enable hardware virtualization in the hosts bios.

Plus you really should be using version 4.2.4 (has updated code for WIndows 8 ) instead of 4.2.2.

Sorry, I don't know how to do it. Could you please give me some steps? But my computer have Hardware visrtualization?

You need to check your manufactures manual to see how to do it for sure or contact the place where you got the computer. I have no idea what you have or how to tell you to enable it. Usually a special key or combination of keys at boot to get into the bios setup screen.

and if my computer doesn't have virtualization , I won't be able to run ubuntu?

The error message says it is disabled. This means you have it but it is not enabled. You can run 32-bit Ubuntu without VT-x/AMD-v but it will be really slow.
Like I said find out how to turn it on and your problems should go away.