Unable to install SQL Server 2005 SP3 Update KB970842 in 32-bit OS

Solutions:

Open the Registry Editor:

1. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.1\Setup
2. Find an entry for Resume and change the DWORD value from 1 to 0.
3. Try to install the Update.

Or you can try to execute this command using the command prompt:

REG ADD "HKLM\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL.1\Setup" /V Resume /T REG_DWORD /D 0 /F