Error while opening central admin link after power pivot uninstall sp 2010?

Question

Error while any link opened in the cental admin
example:http://server:port/_admin/WebApplicationList.aspx
Required permissions cannot be acquired.
ULS log when Config wizard ran 
  An exception of type System.IO.FileNotFoundException was thrown.  Additional exception information: Could not load file or assembly 'Microsoft.AnalysisServices.SharePoint.Integration, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'
or one of its dependencies. The system cannot find the file specified.
System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AnalysisServices.SharePoint.Integration, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified.
File name: 'Microsoft.AnalysisServices.SharePoint.Integration, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91'
   at System.RuntimeTypeHandle._GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark, Boolean loadTypeFromPartialName)
   at System.RuntimeTypeHandle.GetTypeByName(String name, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
   at System.RuntimeType.PrivateGetType(String typeName, Boolean throwOnError, Boolean ignoreCase, Boolean reflectionOnly, StackCrawlMark& stackMark)
   at System.Type.GetType(String typeName, Boolean throwOnError, Boolean ignoreCase)
   at Microsoft.SharePoint.PostSetupConfiguration.ReflectionHelper.InvokeConstructor(String assemblyQualifiedName, Type[] constructorSignature, Object[] constructorParameters)
   at Microsoft.SharePoint.PostSetupConfiguration.TaskCommon.ReflectionHelperInvokeConstructor(String assemblyQualifiedName, Type[] constructorSignature, Object[] constructorParameters, TaskBase task)
the error same as the below article:
http://social.msdn.microsoft.com/Forums/sqlserver/en-US/7a06ebc8-ad8f-4b76-bc44-a8171fde6816/absolutely-sick-of-powerpivot-the-product-stinks-failed-to-find-assembly?forum=sqlkjpowerpointforsharepoint
but any of the sollution did not work.
Thanks
Ravi
Ravi

Answer 1

I have uninstalled power pivot now the central adminlinks are working.
but when i run configuration wizard it pups with error:
Could not load file or assembly 'Microsoft.AnalysisServices.SharePoint.Integration'
Can i delete follwoing key in the registery?
The follwoing article asked to remove the key:
http://social.technet.microsoft.com/Forums/en-US/487f18d4-32cf-4056-a6de-433f69bb7470/configuration-wizard-failed-to-find-assembly
my registry entry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\14.0\WSS\ServiceProxies\Microsoft.AnalysisServices.Sharepoint.Integration.EngineServiceProxy]
"AssemblyQualifiedName"="Microsoft.AnalysisServices.Sharepoint.Integration.EngineServiceProxy, Microsoft.AnalysisServices.SharePoint.Integration, Version=10.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91"
"ServiceProxyName"="MSOLAP$POWERPIVOT"
Ravi