I am having difficulties getting Ubuntu installed on my laptop and I have tried a few different ways of going about this as suggested on the disk. They include a direct install, install within windows and install helper. None of these worked and I do not like or want Windows on my laptop. How can I get rid of Windows and get Ubuntu to install on my computer?

NOTE: Autorun does not work on this laptop for some reason and I am thinking that this may be part of the issue. Please help if you can. Thank you in advance.

~~~UBUNTU INSTALL SOURCE:
Disc: Ubuntu 10.04 LTS
Desktop Edition

~~~LAPTOP COMPUTER INFORMATION:
OS: Windows 8 (Current)
System: 2.7 Windows Experience Index
Processor: AMD C-60 APU with Radeon(tm) HD Graphics 1.00 GHz
Installed Memory (RAM): 4.00 (3.69 GB Useable)
System Type: 64-bit Operating System, x64-based processor
Pen and Touch: No Pen or Touch is available for display.

~~~ERROR MESSAGE:

Windows Boot Manager



Windows failed to start. A recent hardware or software change might be the cause.  



To fix the problem:



  1. Insert your Windows installation disc and restart your computer. 

  2. Choose your language settings, and then click "Next."  

  3. Click "repair your computer."



If you don't have this disc, contact your system administrator or computer manufacturer  

for assistance.   



  File: Ubuntuwinbootwubildr.mbr  



  Status: 0xc0000007b  



  Info: The application or operating system couldn't be loaded because a required  

        file is missing or contains errors.