|You have this Topic listed in the XP forum, but you list the operating system as Vista.|
Is XP on the Dimension 4700 ?
If yes, then the procedures I provided the link to will work.
If yes, do you have the Dell XP Re-installation CD or similar for the 4700 ?
You are presently still attempting to load Windows from the hard drive, and Windows is obviously not working properly.
What you need to do is to boot from (the operating system that is on) an XP CD rather than the hard drive, and do one of the two procedures I provided the link to.
Insert an XP CD in an optical (CD or DVD) drive, then boot the computer.
If the Boot Order or similar settings in your bios Setup are correct, you will see a line early in the boot sequence "Press a key to boot from CD" or similar - you press a key while that line is on the screen.
If you do not see "Press a key to boot from CD" or similar , then you need to
set your Boot Order or similar settings in your bios Setup so that you can boot the computer from (the operating system on) a bootable CD or DVD.
You should see a line while booting "Press xxx for Setup" or similar while booting.
As I recall the key is F2 for Dell computers.
Once Setup has been loaded, find the Boot Order or similar settings.
Set them like so
CD-Rom or similar
if Network boot or similar is there that should be after Hard Drive.
Save bios settings - the computer will restart.