Windows 7 - Windows Cannot Install Required Files

Whenever I try to install windows I get an error saying, Windows cannot install required files. Make sure all files required for installation are available, and restart the installation. Error code 0x080070001. I know there is nothing wrong with the iso I burned because I have used it to install Windows 7 on my laptop. Oh and if it helps I had Windows 7 on this computer before but my explorer.exe messed up and now it won't let me reinstall Windows. Anyone know what I can do to fix my Windows not installing?

are you trying to do a repair install or a clean install??

I'm trying to do a clean install.

Try booting from the DVD, not OS. Set your BIOS to boot from CD?DVD, not the Hard drive.

delete all partitions, format then try again.

Try a full clean & full format.

1) Boot DVD.

2) Press Shift+F10 (for command prompt)

Type in command line

DISKPART
LIST DISK
SELECT DISK # (win 7 HD)
CLEAN ALL
CREATE PARTITION PRIMARY
SELECT PARTITION 1
ACTIVE
FORMAT=NTFS
ASSIGN
EXIT
EXIT

Sometimes this error can result from a faulty CD/DVD or even HDD drive ... also check that the CD/DVD isn't damaged or of poor quality.

I can only boot from my cd/dvd right now, because I have no os on my system, because I formatted my hard drive.

Someone in another thread said changing around their memory helped.

I have changed the memory and that didn't do anything.