I might need this for some really old stuff, so here is a reminder: Unspecified Error in Delphi 2007 on Windows 8 | ACMer.
It does work on Windows 7: Problem installing Delphi 2007 on Windows 7 64 Bit Enterprise – Stack Overflow.
–jeroen
Filed under: Delphi, Delphi 2007, Development, Power User, Software Development, Windows, Windows 8