Office 2007 & Vista severe problem

[betty]

Retail Office 2007 installed on Vista machine many months ago.
Recently Office 2007 just stopped working. Shortcuts would not work
and the error message contained jiberish. When clicking on an
office document I get the "is not a valid Win32 application" error
message. Initially I was able to launch Word by opening the exe file.

I have done the following:
- checked the file associations and it looked good.
- completely updated Vista and Office 2007
- tried a few patches for Office that claimed to fix the "Not a valid
Win32 application" error
- tried booted Vista in safe mode with no luck
- reinstalled Office 2007 twice and fully updated it
- scanned the system with windows defender
- checked for file system errors via the built in Error-checking tool
- ran the SFC command and it claimed to fix one file
- initially IE would not load and I replaced the wship6.dll it was
complaining about and it eliminated the IE error msg.
- ran CCleaner a few times
- ran the installed AVG which is on the machine
- ran an online scanner as well
- downloaded and ran Ad-Aware
- created a new user account and Office behaves the same in that new
account too

Any ideas what is wrong?
Any ideas what caused this problem?
Any ideas how I can get this machine running?

 

[Earle Horton]

Sounds like file corruption and since you can't find a cause I am going to
guess intermittent memory, power supply, motherboard, cpu or hard disk
failure. Better get your essential files backed up "just in case".

The standard answer is reformat and reinstall, then when the problem does
not go away replace hardware modules until you hit the right one. Do you
have onboard BIOS system diagnostics?

Earle