When you double-click any application setup program, nothing may happen. Also, trying to use the Add/Remove Programs tool in Control Panel or running the setup program from a command prompt doesn't work.

This can be caused by either:

• Corrupted or missing config.nt or autoexec.nt

  -or-

• Corrupted or missing KnownDLLs

  Many setup programs are 16-bit and depend on a working DOS Virtual machine NTVDM which depends on the dlls listed in

  HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WOW

  To fix a broken NTVDM, replace the dlls listed in the KnownDLLs list with versions from a working NT. These dlls are mosting in the system32 and system folders (but not all). Just find them on a working NT and copy them to the same location.

Watch the Amazon reviews. I suspect it will get bipolar ratings with lovers & haters. It has action items, checklists, ... After all its titled handbook not secrets.