i tried starting my computer a asus laptop running vista

all i get is

a screen that says "Windows Error Recovery" at the top. Below that it says, "Windows failed to start. A recent hardware of software change might be the cause".

Then it says to Launch the Startup Repair to fix the issue.

There are two options below that..
Launch Startup Repair (recommended)
Start Windows Normally

Which ever one I select, takes me immediately back to the same screen.

i cant move forward from this screen, cant boot from a disk, cant do a thing, HELP ME