Failed to Install Exchange 2013

Hi all,

I encountered in serious problem in process installation Exchange Server .
i let you Overview ,
 Exchange server 2013 was  has been installed on my domain , i did removed the exchange from my domain ,  i did it according step by step remove objects from adsiedit and IIS and etc ... after an exchange server removed successfully i tried to install again on same machine exchange server 2013 .

when i try to preapre again schema i gottsome error :

"

Z:\>setup.exe /Prepareschema /iacceptExchangeServerLicenseTerms

Welcome to Microsoft Exchange Server 2013 Service Pack 1 Unattended Setup
Copying Files...
File copy complete. Setup will now collect additional information needed for installation.

Performing Microsoft Exchange Server Prerequisite Check

    Prerequisite Analysis                                                                                                                   FAILED
     The Active Directory schema isn't up-to-date, and this user account isn't a member of the 'Schema Admins' and/or 'Enterprise Admins' groups.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.SchemaUpdateRequired.aspx

     Setup encountered a problem while validating the state of Active Directory: The Active Directory schema version (15303) is higher than Setup's version (15
292). Therefore, PrepareSchema can't be executed.  See the Exchange setup log for more information on this error.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.AdInitErrorRule.aspx

     The forest functional level of the current Active Directory forest is not Windows Server 2003 native or later. To install Exchange Server 2013, the forest
 functional level must be at least Windows Server 2003 native.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.ForestLevelNotWin2003Native.aspx

     Either Active Directory doesn't exist, or it can't be contacted.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150)/ms.exch.setupreadiness.CannotAccessAD.aspx


The Exchange Server setup operation didn't complete. More details can be found in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder."

i did it with administrator user  of domain ,

i even tried to create New user with same permission and its not success

i dont know what i need to do .
but too much weird is that "prepareAD and "OrganizationName" are worked without error .
after  failed prepare i said to myself let's try exchange installation (Wizard) .
and on Wizard i got another Error :"

Error:
The following error was generated when "$error.Clear(); 
            if ($RoleProductPlatform -eq "amd64")
            {
                $fastInstallConfigPath = Join-Path -Path $RoleBinPath -ChildPath "Search\Ceres\Installer";
                $command = Join-Path -Path $fastInstallConfigPath -ChildPath "InstallConfig.ps1";
                $dataFolderPath = Join-Path -Path $RoleBinPath -ChildPath "Search\Ceres\HostController\Data";

                try
                {
                    # the BasePort value MUST be kept in sync with dev\Search\src\OperatorSchema\SearchConfig.cs
                    &$command -action i -baseport 3800 -dataFolder $dataFolderPath -silent;
                }
                catch
                {
                    $errorMsg = "Failure configuring SearchFoundation through installconfig.ps1 - " + $_.Exception.Message;
                    Write-ExchangeSetupLog -Error $errorMsg;

                    # Clean up the failed configuration attempt.
                    &$command -action u -silent;
                    try
                    {
                        if ([System.IO.Directory]::Exists($dataFolderPath))
                        {
                            [System.IO.Directory]::Delete($dataFolderPath, $true);
                        }
                    }
                    catch
                    {
                        $deleteErrorMsg = "Failure cleaning up SearchFoundation Data folder. - " + $dataFolderPath + " - " + $_.Exception.Message;
                        Write-ExchangeSetupLog -Error $deleteErrorMsg;
                    }
                }
            }
        " was run: "Failure configuring SearchFoundation through installconfig.ps1 - Error occurred while configuring Search Foundation for Exchange.System.TimeoutException: Timed out waiting for Admin node to be up and running
   at Microsoft.Ceres.Exchange.PostSetup.DeploymentManager.WaitForAdminNode(String hostControllerNetTcpWcfUrl)
   at Microsoft.Ceres.Exchange.PostSetup.DeploymentManager.Install(String installDirectory, String dataDirectoryPath, Int32 basePort, String logFile, Boolean singleNode, String systemName, Boolean attachedMode)
   at CallSite.Target(Closure , CallSite , Type , Object , Object , Object , Object , Object , Object , Boolean )".

"

i very will appreciate your helping guys .

Thank you 

website: www.PelegIT.co.il