Glass, has this just started happening and did you install some software just before it happened?
There appears to be a command in DOS calling for some files in a folder 7C. NDISHLP is the help file for NDIS (Network Driver Interface Specification).
I suspect these are all being called for from C:\AUTOEXEC.BAT, so if you can edit to add a REM at the start of the lines calling for them you may be able to get Windows to install. If you can't get Windows to open you will have to do the editing in DOS.