Thanks Boggin but I will wait to hear from Shane in case he may have another lead to what is going on but I will keep your advice in mind.
I don't know if the following is any help in resolving the problem:
I soft shutdown the computer at approx. 8.56pm tonight which took 2m.20s. I started it up again at approx. 9.03pm which took 6 min.
It booted up without any problems. I don't know if the Performance Event logs will be of any help but here they are after the shutdown and starting up at 8.56pm and 9.03pm respectively.
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:52 PM
Event ID: 101
Task Category: Boot Performance Monitoring
Level: Warning
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
This application took longer than usual to start up, resulting in a performance degradation in the system startup process:
File Name : explorer.exe
Friendly Name : Windows Explorer
Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Total Time : 9231ms
Degradation Time : 6212ms
Incident Time (UTC) : 31/01/2015 09:01:02 PM
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>101</EventID>
<Version>1</Version>
<Level>3</Level>
<Task>4002</Task>
<Opcode>33</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:52.889Z" />
<EventRecordID>18</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B3BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3932" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="StartTime">2015-01-31T21:01:02.765Z</Data>
<Data Name="NameLength">13</Data>
<Data Name="Name">explorer.exe</Data>
<Data Name="FriendlyNameLength">17</Data>
<Data Name="FriendlyName">Windows Explorer</Data>
<Data Name="VersionLength">39</Data>
<Data Name="Version">6.0.6000.16386 (vista_rtm.061101-2205)</Data>
<Data Name="TotalTime">9231</Data>
<Data Name="DegradationTime">6212</Data>
<Data Name="PathLength">24</Data>
<Data Name="Path">C:\Windows\explorer.exe</Data>
<Data Name="ProductNameLength">37</Data>
<Data Name="ProductName">Microsoft® Windows® Operating System</Data>
<Data Name="CompanyNameLength">22</Data>
<Data Name="CompanyName">Microsoft Corporation</Data>
</EventData>
</Event>
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:52 PM
Event ID: 100
Task Category: Boot Performance Monitoring
Level: Error
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
Windows has started up:
Boot Duration : 90866ms
IsDegradation : false
Incident Time (UTC) : 31/01/2015 09:01:02 PM
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>100</EventID>
<Version>1</Version>
<Level>2</Level>
<Task>4002</Task>
<Opcode>34</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:52.889Z" />
<EventRecordID>17</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B3BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3932" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="BootTsVersion">2</Data>
<Data Name="BootStartTime">2015-01-31T21:01:02.765Z</Data>
<Data Name="BootEndTime">2015-01-31T21:05:35.215Z</Data>
<Data Name="SystemBootInstance">2431</Data>
<Data Name="UserBootInstance">2405</Data>
<Data Name="BootTime">90866</Data>
<Data Name="MainPathBootTime">72366</Data>
<Data Name="BootKernelInitTime">24</Data>
<Data Name="BootDriverInitTime">5160</Data>
<Data Name="BootDevicesInitTime">9525</Data>
<Data Name="BootPrefetchInitTime">33081</Data>
<Data Name="BootPrefetchBytes">502403072</Data>
<Data Name="BootAutoChkTime">0</Data>
<Data Name="BootSmssInitTime">20596</Data>
<Data Name="BootCriticalServicesInitTime">3120</Data>
<Data Name="BootUserProfileProcessingTime">1203</Data>
<Data Name="BootMachineProfileProcessingTime">178</Data>
<Data Name="BootExplorerInitTime">27698</Data>
<Data Name="BootNumStartupApps">18</Data>
<Data Name="BootPostBootTime">18500</Data>
<Data Name="BootIsRebootAfterInstall">false</Data>
<Data Name="BootRootCauseStepImprovementBits">129</Data>
<Data Name="BootRootCauseGradualImprovementBits">0</Data>
<Data Name="BootRootCauseStepDegradationBits">8388608</Data>
<Data Name="BootRootCauseGradualDegradationBits">0</Data>
<Data Name="BootIsDegradation">false</Data>
<Data Name="BootIsStepDegradation">false</Data>
<Data Name="BootIsGradualDegradation">false</Data>
<Data Name="BootImprovementDelta">133923</Data>
<Data Name="BootDegradationDelta">0</Data>
<Data Name="BootIsRootCauseIdentified">true</Data>
</EventData>
</Event>
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:38 PM
Event ID: 203
Task Category: Shutdown Performance Monitoring
Level: Warning
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
This service caused a delay in the system shutdown process:
File Name : DPS
Friendly Name : WDI Diagnostic Policy Service
Version : 6.0.6001.18000 (longhorn_rtm.080118-1840)
Total Time : 6984ms
Degradation Time : 3754ms
Incident Time (UTC) : 30/01/2015 11:34:59 PM
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>203</EventID>
<Version>1</Version>
<Level>3</Level>
<Task>4007</Task>
<Opcode>41</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:38.975Z" />
<EventRecordID>16</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B2BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3880" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="StartTime">2015-01-30T23:34:59.135Z</Data>
<Data Name="NameLength">4</Data>
<Data Name="Name">DPS</Data>
<Data Name="FriendlyNameLength">30</Data>
<Data Name="FriendlyName">WDI Diagnostic Policy Service</Data>
<Data Name="VersionLength">42</Data>
<Data Name="Version">6.0.6001.18000 (longhorn_rtm.080118-1840)</Data>
<Data Name="TotalTime">6984</Data>
<Data Name="DegradationTime">3754</Data>
<Data Name="PathLength">28</Data>
<Data Name="Path">C:\Windows\system32\dps.dll</Data>
<Data Name="ProductNameLength">37</Data>
<Data Name="ProductName">Microsoft® Windows® Operating System</Data>
<Data Name="CompanyNameLength">22</Data>
<Data Name="CompanyName">Microsoft Corporation</Data>
</EventData>
</Event>
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:38 PM
Event ID: 201
Task Category: Shutdown Performance Monitoring
Level: Warning
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
This application caused a delay in the system shutdown process:
File Name : spoolsv.exe
Friendly Name : Spooler SubSystem App
Version : 6.0.6000.16386 (vista_rtm.061101-2205)
Total Time : 232ms
Degradation Time : 120ms
Incident Time (UTC) : 30/01/2015 11:34:59 PM
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>201</EventID>
<Version>1</Version>
<Level>3</Level>
<Task>4007</Task>
<Opcode>41</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:38.975Z" />
<EventRecordID>15</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B2BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3880" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="StartTime">2015-01-30T23:34:59.135Z</Data>
<Data Name="NameLength">12</Data>
<Data Name="Name">spoolsv.exe</Data>
<Data Name="FriendlyNameLength">22</Data>
<Data Name="FriendlyName">Spooler SubSystem App</Data>
<Data Name="VersionLength">39</Data>
<Data Name="Version">6.0.6000.16386 (vista_rtm.061101-2205)</Data>
<Data Name="TotalTime">232</Data>
<Data Name="DegradationTime">120</Data>
<Data Name="PathLength">32</Data>
<Data Name="Path">C:\Windows\System32\spoolsv.exe</Data>
<Data Name="ProductNameLength">37</Data>
<Data Name="ProductName">Microsoft® Windows® Operating System</Data>
<Data Name="CompanyNameLength">22</Data>
<Data Name="CompanyName">Microsoft Corporation</Data>
</EventData>
</Event>
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:38 PM
Event ID: 201
Task Category: Shutdown Performance Monitoring
Level: Warning
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
This application caused a delay in the system shutdown process:
File Name : Mini_Monitor.exe
Friendly Name : CleanMem Mini Monitor
Version : 2.5.0.0
Total Time : 2654ms
Degradation Time : 2207ms
Incident Time (UTC) : 30/01/2015 11:34:59 PM
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>201</EventID>
<Version>1</Version>
<Level>3</Level>
<Task>4007</Task>
<Opcode>41</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:38.975Z" />
<EventRecordID>14</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B2BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3880" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="StartTime">2015-01-30T23:34:59.135Z</Data>
<Data Name="NameLength">17</Data>
<Data Name="Name">Mini_Monitor.exe</Data>
<Data Name="FriendlyNameLength">22</Data>
<Data Name="FriendlyName">CleanMem Mini Monitor</Data>
<Data Name="VersionLength">8</Data>
<Data Name="Version">2.5.0.0</Data>
<Data Name="TotalTime">2654</Data>
<Data Name="DegradationTime">2207</Data>
<Data Name="PathLength">43</Data>
<Data Name="Path">C:\Program Files\CleanMem\Mini_Monitor.exe</Data>
<Data Name="ProductNameLength">22</Data>
<Data Name="ProductName">CleanMem Mini Monitor</Data>
<Data Name="CompanyNameLength">14</Data>
<Data Name="CompanyName">PcWinTech.com</Data>
</EventData>
</Event>
Log Name: Microsoft-Windows-Diagnostics-Performance/Operational
Source: Microsoft-Windows-Diagnostics-Performance
Date: 31/01/2015 09:05:38 PM
Event ID: 200
Task Category: Shutdown Performance Monitoring
Level: Critical
Keywords: Event Log
User: LOCAL SERVICE
Computer: home-PC
Description:
Windows has shutdown:
Shutdown Duration : 76957666ms
IsDegradation : false
Incident Time (UTC) : 30/01/2015 11:34:59 PM
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>1</Level>
<Task>4007</Task>
<Opcode>40</Opcode>
<Keywords>0x8000000000010000</Keywords>
<TimeCreated SystemTime="2015-01-31T21:05:38.975Z" />
<EventRecordID>13</EventRecordID>
<Correlation ActivityID="{00000000-86C8-0000-B2BD-A305993DD001}" />
<Execution ProcessID="2728" ThreadID="3880" />
<Channel>Microsoft-Windows-Diagnostics-Performance/Operational</Channel>
<Computer>home-PC</Computer>
<Security UserID="S-1-5-19" />
</System>
<EventData>
<Data Name="ShutdownTsVersion">1</Data>
<Data Name="ShutdownStartTime">2015-01-30T23:34:59.135Z</Data>
<Data Name="ShutdownEndTime">2015-01-31T20:57:36.802Z</Data>
<Data Name="ShutdownTime">76957666</Data>
<Data Name="ShutdownUserSessionTime">21292</Data>
<Data Name="ShutdownUserPolicyTime">339</Data>
<Data Name="ShutdownUserProfilesTime">151</Data>
<Data Name="ShutdownSystemSessionsTime">10677</Data>
<Data Name="ShutdownPreShutdownNotificationsTime">6524</Data>
<Data Name="ShutdownServicesTime">1997</Data>
<Data Name="ShutdownKernelTime">76925696</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>