changing OS from 32 bit to 64 bit.

Steps 8 and 16 here may reveal what is hanging the Shutdown: Troubleshooting Steps for Windows 7

view performance details in events log... there were 2 problems that showed up . NDStray.exe and configfree task tray menu ???

hi there.... last night my computer did shut down when clicking start and then shutdown.... but after restarting again and then after an hour later ,shutting it down before i went to bed,,, it did not shutdown ? the computer is working absolutely fine except for it not shutting down ! i went into the event viewer and there are a few events that are either a warning an error or critical ? Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 23/04/2014 09:01:35
Event ID: 200
Task Category: Shutdown Performance Monitoring
Level: Warning
Keywords: Event Log
User: LOCAL SERVICE
Computer: NEIL-PC
Description:
Windows has shutdown:
Shutdown Duration : 29612ms
IsDegradation : false
Incident Time (UTC) : ‎2014‎-‎04‎-‎23T07:57:17.790813200Z
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Diagnostics-Performance" Guid="{CFC18EC0-96B1-4EBA-961B-622CAEE05B0A}" />
<EventID>200</EventID>
<Version>1</Version>
<Level>3</Level>
<Task>4007</Task>
<Opcode>40</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2014-04-23T08:01:35.679401000Z" />
<EventRecordID>169</EventRecordID>
<Correlation ActivityID="{030B6C40-F800-0000-2D62-47D8C95ECF01}" />
<Execution ProcessID="1548" ThreadID="2036" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>NEIL-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="ShutdownTsVersion">1</Data>
<Data Name="ShutdownStartTime">2014-04-23T07:57:17.790813200Z</Data>
<Data Name="ShutdownEndTime">2014-04-23T07:57:47.403314700Z</Data>
<Data Name="ShutdownTime">29612</Data>
<Data Name="ShutdownUserSessionTime">11033</Data>
<Data Name="ShutdownUserPolicyTime">90</Data>
<Data Name="ShutdownUserProfilesTime">342</Data>
<Data Name="ShutdownSystemSessionsTime">6485</Data>
<Data Name="ShutdownPreShutdownNotificationsTime">1004</Data>
<Data Name="ShutdownServicesTime">4998</Data>
<Data Name="ShutdownKernelTime">12093</Data>
<Data Name="ShutdownRootCauseStepImprovementBits">0</Data>
<Data Name="ShutdownRootCauseGradualImprovementBits">0</Data>
<Data Name="ShutdownRootCauseStepDegradationBits">0</Data>
<Data Name="ShutdownRootCauseGradualDegradationBits">0</Data>
<Data Name="ShutdownIsDegradation">false</Data>
<Data Name="ShutdownTimeChange">0</Data>
</EventData>
</Event>

That is a normal Shutdown listing. What you'd be looking for is another Error, Critical or Warning event nearby that shows what is happening that is hanging the Shutdown.

If that doesn't provide clues then try Gathering a Startup, Shutdown, Sleep, Hibernate, or Reboot Trace - Windows 7 Forums which will trace the exact cause in a chart.

Most likely the problem is caused by the bloatware which was reinstalled defeating the purpose of a Clean Reinstall - Factory OEM Windows 7. I would strongly consider doing it over, but this time before the actual install boot into the installation media's System Recovery Options to open a Command Line and wipe the hard drive of all code with Diskpart Clean Command .

Be sure to read over the steps in Clean Reinstall - Factory OEM Windows 7 which if followed closely will result in a perfect install. This time only import the exact Toshiba programs you know you need and use. Get all of your drivers from Windows Update before importing any. Ask back if you have any questions so you understand each step fully before proceeding.

hi there, on the Clean Reinstall - Factory OEM Windows 7 link you sent. i read it and i dont understand NO.1 which says Burn ISO to DVD or write to USB flash stick. how do i do this ?

i am finding making an iso disc very hard following the link. i clicked on the blue download button and it downloaded onto my desktop. i then ckicked on it and the box opens up ,, microsoft store---windows 7 usb/dvd download tool. it then says step 1 of 4. choose an iso file ? what is an iso file and where can i find it ? i click on browse but nothing shows that says iso ???

Don't you have a Win7 installation DVD with SP1? That's all the download is. If you got it from a legit source then you don't need to worry about downloading and burning another unless there are problems stalling the installation.

The ISO files are provided mainly for those who bought Win7 on a computer in a store and weren't given the installation media to do reinstalls or repairs.