Exchange Server 2013 Installation error

Hi Support,

I have try to install exchange server 2013 on server 2012. after configure active directory when try to install exchange server command Setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms

Microsoft Windows [Version 6.2.9200]

(c) 2012 Microsoft Corporation. All rights reserved.

C:\Windows\system32>CD\

C:\>E:

E:\>cd pradeep\Ex Setup 2013

E:\pradeep\EX Setup 2013>Setup.exe /PrepareSchema /IAcceptExchangeServerLicenseT
erms

Welcome to Microsoft Exchange Server 2013 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
     A reboot from a previous installation is pending. Please restart the system
 and then rerun Setup.
     For more information, visit: http://technet.microsoft.com/library(EXCHG.150
)/ms.exch.setupreadiness.RebootPending.aspx


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

E:\pradeep\EX Setup 2013>