If this were me, and since this is a brand new build - meaning nothing but time has been lost, I would probably start over again and reinstall Windows - that is,
AFTER I eliminated RAM as the cause of the problem.
If RAM tests good, you could try to salvage this by running System File Checker (SFC). Follow the instructions
here. You will need to have your Windows installation disk in the drive. If you encounter the problem where it constantly asks for you to insert the CD and press retry, just keep pressing retry and it will eventually work its way through - I would not bother with the workaround at this time.
I also found the
Delayed Write Failed MSKB article.