After installing BHold I would get this Error that the Service was unavailable with Error 503.
After doing some research I discovered that SharePoint 2013 doesn't allow 32 bit apps by default. So the trick is to change a configuration to allow 32 bit apps.
This can be found here: http://www.stefanjohansson.org/2013/07/how-to-run-a-32-bit-web-application-on-a-sharepoint-2013-server/
All you really need to do is run a command line at c:\windows\system32\inetsrv. Then execute the following command: appcmd.exe set config -section:system.webServer/globalModules /[name='SPNativeRequestModule'].preCondition:integratedMode,bitness64
Now BHold should work.