Windows Activation failure

I saw a thread http://www.eightforums.com/windows-...02-windows-8-activation-error-0x8007007b.html that said type Licensingdiag.exe -report %userprofile%\desktop\report.txt -log %userprofile%\desktop\repfiles.cab
so I did and this is what I got in the report file from the desktop

<DiagReport>
<LicensingData>
<ToolVersion>6.2.9200.16384</ToolVersion>
<LicensingStatus>SL_LICENSING_STATUS_NOTIFICATION</LicensingStatus>
<LicensingStatusReason>0xC004F056</LicensingStatusReason>
<LocalGenuineState>SL_GEN_STATE_INVALID_LICENSE</LocalGenuineState>
<LocalGenuineResultP>0</LocalGenuineResultP>
<LastOnlineGenuineResult>0x00000000</LastOnlineGenuineResult>
<GraceTimeMinutes>0</GraceTimeMinutes>
<TotalGraceDays>0</TotalGraceDays>
<ValidityExpiration></ValidityExpiration>
<ActivePartialProductKey>J8CK4</ActivePartialProductKey>
<ActiveProductKeyPid2>00178-70000-00011-AA203</ActiveProductKeyPid2>
<OSVersion>6.2.9200.2.00010100.0.0.048</OSVersion>
<ProductName>Windows 8 Pro</ProductName>
<ProcessorArchitecture>x86</ProcessorArchitecture>
<EditionId>Professional</EditionId>
<BuildLab>9200.win8_rtm.120725-1247</BuildLab>
<TimeZone>Eastern Standard Time(GMT-04:00)</TimeZone>
<ActiveSkuId>a98bcd6d-5343-4603-8afe-5908e4611112</ActiveSkuId>
<ActiveSkuDescription>Windows(R) Operating System, VOLUME_KMSCLIENT channel</ActiveSkuDescription>
<ProductUniquenessGroups>55c92734-d682-4d71-983e-d6ec3f16059f</ProductUniquenessGroups>
<ActiveProductKeyPKeyId>dbed1eaa-798c-3b97-1530-28b907a25001</ActiveProductKeyPKeyId>
<ActiveProductKeyPidEx>05426-01787-000-000011-03-1033-9200.0000-1822013</ActiveProductKeyPidEx>
<ActiveProductKeyChannel>Volume:GVLK</ActiveProductKeyChannel>
<ActiveVolumeCustomerPid></ActiveVolumeCustomerPid>
<OfflineInstallationId>285916531394312935075976168402691011176463411643195056532859360</OfflineInstallationId>
<DomainJoined>false</DomainJoined>
<ComputerSid>S-1-5-21-277694693-3369793910-1007757714</ComputerSid>
<ProductLCID>1033</ProductLCID>
<UserLCID>1033</UserLCID>
<SystemLCID>1033</SystemLCID>
<CodeSigning>SIGNED_INFO_PRS_SIGNED</CodeSigning>
<ServiceAvailable>true</ServiceAvailable>
<OemMarkerVersion>0x00020001</OemMarkerVersion>
<OemId>TOSCPL</OemId>
<OemTableId>TOSCPL00</OemTableId>
<Manufacturer>TOSHIBA</Manufacturer>
<Model>Satellite L455D</Model>
<InstallDate>20130701160325.000000-240</InstallDate>
</LicensingData>
<HealthCheck>
<Result>PASS</Result>
<TamperedItems></TamperedItems>
</HealthCheck>
<GenuineAuthz>
<ServerProps>0xc004f200</ServerProps>
</GenuineAuthz>
</DiagReport>

The Key in use is a Volume License KMS Key
This requires activation against a private server, rather than Microsoft's public ones.
Your machine appears to have shipped with Windows 7 pre-installed - which means that you should have a retail license for Windows 8
You need to change the installed Key to the one from your Windows 8 pack, and activate that.