Report for missing registry keys

[poweld1]

I've got a report as below to find computers with the following registry key. I can't seem to figure out how to create a report to find computers without the registry key. Can I get some help with this?

Select Top 1000000 tsysOS.Image As icon,
  tblAssets.AssetID,
  tblAssets.AssetUnique,
  tblAssets.Domain,
  tblRegistry.Regkey,
  tblRegistry.Valuename,
  tblRegistry.Value,
  tblRegistry.Lastchanged
From tblAssets
  Inner Join tsysOS On tsysOS.OScode = tblAssets.OScode
  Inner Join tblRegistry On tblAssets.AssetID = tblRegistry.AssetID
Where tblRegistry.Regkey Like '%SOFTWARE\Safend\Protector' And
  tblRegistry.Valuename = 'InstallDir'
Order By tblAssets.AssetUnique

[jaywill80]

How I would scope this report down to search for just laptops missing a registry key?

Thanks

[poweld1]

Thanks that works great.

[Hemoco · Accepted solution]

Please use the report below for this.

Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tsysAssetTypes.AssetTypename,
tsysAssetTypes.AssetTypeIcon10 As icon,
tblAssets.IPAddress,
tblAssets.Lastseen,
tblAssets.Lasttried
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
Where tblAssets.AssetID Not In (Select tblAssets.AssetID
From tblAssets Inner Join tblRegistry On tblAssets.AssetID =
tblRegistry.AssetID
Where tblRegistry.Regkey Like '%SOFTWARE\Safend\Protector' And
tblRegistry.Valuename = 'InstallDir') And tsysAssetTypes.AssetTypename =
'windows' And tblAssets.Lastseen <> '' And tblAssetCustom.State = 1