You have the bios settings wrong.
This is from my eee blog: http://eeemac.blogspot.com/
Setting the Bios
Boot the computer and hold down the F2 key (no alt this time)
This will take you to the BIOS SETUP UTILITY.
These instructions are specifically for the 901. The 1000 has several less options. if you dont' have an option, don't sweat it.
There are five tabs across the top, we will go from left to right.
Instructions on how to navagate this Setup Utility is on the right hand side of the screen.
Main (first tab)
Make sure the system time and date are correct.
Advanced
1. IDE Configuration:If you are using your larger SSD Drive, it will probably be the slave. Look at it's name and remember it for later. (esc to exit) If you have a hard drive in your system instead of an SSD, i'm not sure what you'll find, but you may have only one option. That is the one to use.
2. Onboard Device Configuration: Disable Onboard Lan, Enable everything else.
3. CPU Configuration: Max CUPID value limit [Disabled] the other two options enable
4. Escape to exit
Security
Don't do anything under this tab
Boot
We are going to do this one out of order
1. Hard Disk Drives: Using the +/- keys make your boot drive, the large one the 1st drive.
2. Boot Disk Priority: Using the +/- keys make the CD Rom the first boot device. Your harddrive should be 2nd or 3rd
3. Boot Setting Configuration: All enabled
Exit
Select Exit & Save changes, give it an OK when you get the option to.