You can also try using a third-party tool, such as Windows Vista Watermark Remover. These tools can help you remove the watermark, but be sure to download them from trusted sources.
and Windows Server 2008 R2. Documentation explicitly states it is not for Vista or the original Server 2008. How it worked removewat windows vista home basic 32 bit link
There are several methods to remove the watermark from your Windows Vista Home Basic 32-bit system. Before attempting any of these methods, make sure you have a valid product key and that your system is free from malware and viruses. You can also try using a third-party tool,