Installing Ubuntu 12.04 TLS on HP 530

Simply follow the tutorial from Ubuntu site

After my installation I encountered a few glitches and issues:

1. Can't boot into Ubuntu, I have to have my USB plugged in and boot from it
2. Unable to set up my wireless network, the wireless button on HP530 not working
3. Unable to find my graphics driver

For issue 1:

sudo grub-install /dev/sda  

Then I modify the /boot/grub/menu.lst and change somewhere in the line "quiet splash" to "nomodeset" 

For issue 2:

sudo rfkill unblock all  

For issue 3:
Can anyone help? I can't seem to find the correct driver.