My Thinkpad T500 goes back to sleep automatically, and sometimes repeatedly , right after wakeup. Basically, this happens after I put the system to sleep by either closing the lid or pressing the sleep button. Then when I bring it out of sleep it come up to the login page and then after a few seconds (sometimes just 1 sec) goes back to sleep. When I wake it up again everything is fine. This means that most of the time I have to wake it up twice before it is up. In some cases it keeps going back to sleep for 5-6 times and after longer periods of time (in mid keystroke or mouse movement) After I reboot the system, it goes back to the 2-sleep 2-wake up situation. this is a new installation of Windows 7 (plus all the updates). The sleep event timers are all ok (in the range of 10 minutes or longer), so it cannot be a timer issue. I checked the event log and the event that causes sleep seems to be "Sleep Reason: application API" I have run out of ideas and tried everything... please help :). Here is the event log and its details: Information 11/21/2010 7:56:39 AM Eventlog 104 Log clear Information 11/21/2010 7:58:25 AM Service Control Manager 7040 None Information 11/21/2010 8:00:04 AM Kernel-Power 42 (64) Information 11/21/2010 8:01:16 AM Kernel-General 1 None Information 11/21/2010 8:01:17 AM BROWSER 8033 None Information 11/21/2010 8:01:18 AM Service Control Manager 7042 None Information 11/21/2010 8:01:18 AM Service Control Manager 7036 None Information 11/21/2010 8:01:20 AM Service Control Manager 7036 None Information 11/21/2010 8:01:23 AM Service Control Manager 7036 None Information 11/21/2010 8:01:23 AM Power-Troubleshooter 1 None Information 11/21/2010 8:01:24 AM Kernel-Power 42 (64) Information 11/21/2010 8:01:30 AM Kernel-General 1 None Information 11/21/2010 8:01:31 AM Service Control Manager 7042 None Information 11/21/2010 8:01:31 AM Service Control Manager 7036 None Information 11/21/2010 8:01:33 AM Service Control Manager 7036 None Information 11/21/2010 8:01:35 AM Power-Troubleshooter 1 None Information 11/21/2010 8:06:29 AM Service Control Manager 7036 None Details of the above events: Log Name: System Source: Service Control Manager Date: 11/21/2010 7:58:25 AM Event ID: 7040 Task Category: None Level: Information Keywords: Classic User: SYSTEM Computer: PathLenovo Description: The start type of the Background Intelligent Transfer Service service was changed from auto start to demand start. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7040</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T15:58:25.651348200Z" /> <EventRecordID>2019</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="1396" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security UserID="S-1-5-18" /> </System> <EventData> <Data Name="param1">Background Intelligent Transfer Service</Data> <Data Name="param2">auto start</Data> <Data Name="param3">demand start</Data> <Data Name="param4">BITS</Data> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Kernel-Power Date: 11/21/2010 8:00:04 AM Event ID: 42 Task Category: (64) Level: Information Keywords: (4) User: N/A Computer: PathLenovo Description: The system is entering sleep. Sleep Reason: Button or Lid Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" /> <EventID>42</EventID> <Version>2</Version> <Level>4</Level> <Task>64</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000004</Keywords> <TimeCreated SystemTime="2010-11-21T16:00:04.742722200Z" /> <EventRecordID>2020</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="60" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="TargetState">4</Data> <Data Name="EffectiveState">4</Data> <Data Name="Reason">0</Data> <Data Name="Flags">2</Data> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Kernel-General Date: 11/21/2010 8:01:16 AM Event ID: 1 Task Category: None Level: Information Keywords: Time User: N/A Computer: PathLenovo Description: The system time has changed to ‎2010‎-‎11‎-‎21T16:01:16.500000000Z from ‎2010‎-‎11‎-‎21T16:00:05.865924200Z. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Kernel-General" Guid="{A68CA8B7-004F-D7B6-A698-07E2DE0F1F5D}" /> <EventID>1</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000010</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:16.500000000Z" /> <EventRecordID>2022</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="60" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="NewTime">2010-11-21T16:01:16.500000000Z</Data> <Data Name="OldTime">2010-11-21T16:00:05.865924200Z</Data> </EventData> </Event> Log Name: System Source: BROWSER Date: 11/21/2010 8:01:17 AM Event ID: 8033 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The browser has forced an election on network \Device\NetBT_Tcpip_{4475D8FF-EFBA-4A7D-ADA5-233BE2896EAC} because a master browser was stopped. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="BROWSER" /> <EventID Qualifiers="16384">8033</EventID> <Level>4</Level> <Task>0</Task> <Keywords>0x80000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:17.000000000Z" /> <EventRecordID>2021</EventRecordID> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data>\Device\NetBT_Tcpip_{4475D8FF-EFBA-4A7D-ADA5-233BE2896EAC}</Data> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:18 AM Event ID: 7042 Task Category: None Level: Information Keywords: Classic User: SYSTEM Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service was successfully sent a stop control. The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)] Comment: None Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7042</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:18.184803000Z" /> <EventRecordID>2023</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="3216" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security UserID="S-1-5-18" /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">stop</Data> <Data Name="param3">0x40030011</Data> <Data Name="param4">Operating System: Network Connectivity (Planned)</Data> <Data Name="param5">None</Data> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:18 AM Event ID: 7036 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service entered the stopped state. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7036</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:18.200403000Z" /> <EventRecordID>2024</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="3216" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">stopped</Data> <Binary>6C006D0068006F007300740073002F0031000000</Binary> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:20 AM Event ID: 7036 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service entered the running state. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7036</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:20.836807600Z" /> <EventRecordID>2025</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="5920" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">running</Data> <Binary>6C006D0068006F007300740073002F0034000000</Binary> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:23 AM Event ID: 7036 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The Multimedia Class Scheduler service entered the running state. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7036</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:23.270411900Z" /> <EventRecordID>2026</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="3216" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="param1">Multimedia Class Scheduler</Data> <Data Name="param2">running</Data> <Binary>4D004D004300530053002F0034000000</Binary> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Power-Troubleshooter Date: 11/21/2010 8:01:23 AM Event ID: 1 Task Category: None Level: Information Keywords: User: LOCAL SERVICE Computer: PathLenovo Description: The system has resumed from sleep. Sleep Time: ‎2010‎-‎11‎-‎21T15:59:58.128310600Z Wake Time: ‎2010‎-‎11‎-‎21T16:01:17.046001000Z Wake Source: Device -USB Root Hub Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Power-Troubleshooter" Guid="{CDC05E28-C449-49C6-B9D2-88CF761644DF}" /> <EventID>1</EventID> <Version>1</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:23.481612800Z" /> <EventRecordID>2027</EventRecordID> <Correlation ActivityID="{AE677EE2-C5A6-4CC0-B628-CEF6E14204D9}" /> <Execution ProcessID="1536" ThreadID="4556" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security UserID="S-1-5-19" /> </System> <EventData> <Data Name="SleepTime">2010-11-21T15:59:58.128310600Z</Data> <Data Name="WakeTime">2010-11-21T16:01:17.046001000Z</Data> <Data Name="SleepDuration">7726</Data> <Data Name="WakeDuration">545</Data> <Data Name="DriverInitDuration">475</Data> <Data Name="BiosInitDuration">261</Data> <Data Name="HiberWriteDuration">0</Data> <Data Name="HiberReadDuration">0</Data> <Data Name="HiberPagesWritten">0</Data> <Data Name="Attributes">20496</Data> <Data Name="TargetState">4</Data> <Data Name="EffectiveState">4</Data> <Data Name="WakeSourceType">4</Data> <Data Name="WakeSourceTextLength">12</Data> <Data Name="WakeSourceText">USB Root Hub</Data> <Data Name="WakeTimerOwnerLength">0</Data> <Data Name="WakeTimerContextLength">0</Data> <Data Name="WakeTimerOwner"> </Data> <Data Name="WakeTimerContext"> </Data> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Kernel-Power Date: 11/21/2010 8:01:24 AM Event ID: 42 Task Category: (64) Level: Information Keywords: (4) User: N/A Computer: PathLenovo Description: The system is entering sleep. Sleep Reason: Application API Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Kernel-Power" Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" /> <EventID>42</EventID> <Version>2</Version> <Level>4</Level> <Task>64</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000004</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:24.716824500Z" /> <EventRecordID>2028</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="68" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="TargetState">4</Data> <Data Name="EffectiveState">4</Data> <Data Name="Reason">4</Data> <Data Name="Flags">0</Data> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Kernel-General Date: 11/21/2010 8:01:30 AM Event ID: 1 Task Category: None Level: Information Keywords: Time User: N/A Computer: PathLenovo Description: The system time has changed to ‎2010‎-‎11‎-‎21T16:01:30.500000000Z from ‎2010‎-‎11‎-‎21T16:01:25.715226200Z. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Kernel-General" Guid="{A68CA8B7-004F-D7B6-A698-07E2DE0F1F5D}" /> <EventID>1</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000010</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:30.500000000Z" /> <EventRecordID>2029</EventRecordID> <Correlation /> <Execution ProcessID="4" ThreadID="68" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="NewTime">2010-11-21T16:01:30.500000000Z</Data> <Data Name="OldTime">2010-11-21T16:01:25.715226200Z</Data> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:31 AM Event ID: 7042 Task Category: None Level: Information Keywords: Classic User: SYSTEM Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service was successfully sent a stop control. The reason specified was: 0x40030011 [Operating System: Network Connectivity (Planned)] Comment: None Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7042</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:31.248801300Z" /> <EventRecordID>2030</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="3424" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security UserID="S-1-5-18" /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">stop</Data> <Data Name="param3">0x40030011</Data> <Data Name="param4">Operating System: Network Connectivity (Planned)</Data> <Data Name="param5">None</Data> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:31 AM Event ID: 7036 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service entered the stopped state. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7036</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:31.404801600Z" /> <EventRecordID>2031</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="5920" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">stopped</Data> <Binary>6C006D0068006F007300740073002F0031000000</Binary> </EventData> </Event> Log Name: System Source: Service Control Manager Date: 11/21/2010 8:01:33 AM Event ID: 7036 Task Category: None Level: Information Keywords: Classic User: N/A Computer: PathLenovo Description: The TCP/IP NetBIOS Helper service entered the running state. Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Service Control Manager" Guid="{555908d1-a6d7-4695-8e1e-26931d2012f4}" EventSourceName="Service Control Manager" /> <EventID Qualifiers="16384">7036</EventID> <Version>0</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8080000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:33.183204700Z" /> <EventRecordID>2032</EventRecordID> <Correlation /> <Execution ProcessID="528" ThreadID="6124" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security /> </System> <EventData> <Data Name="param1">TCP/IP NetBIOS Helper</Data> <Data Name="param2">running</Data> <Binary>6C006D0068006F007300740073002F0034000000</Binary> </EventData> </Event> Log Name: System Source: Microsoft-Windows-Power-Troubleshooter Date: 11/21/2010 8:01:35 AM Event ID: 1 Task Category: None Level: Information Keywords: User: LOCAL SERVICE Computer: PathLenovo Description: The system has resumed from sleep. Sleep Time: ‎2010‎-‎11‎-‎21T16:01:23.849619900Z Wake Time: ‎2010‎-‎11‎-‎21T16:01:31.139601200Z Wake Source: Device -USB Root Hub Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event"> <System> <Provider Name="Microsoft-Windows-Power-Troubleshooter" Guid="{CDC05E28-C449-49C6-B9D2-88CF761644DF}" /> <EventID>1</EventID> <Version>1</Version> <Level>4</Level> <Task>0</Task> <Opcode>0</Opcode> <Keywords>0x8000000000000000</Keywords> <TimeCreated SystemTime="2010-11-21T16:01:35.024008000Z" /> <EventRecordID>2033</EventRecordID> <Correlation ActivityID="{03621B69-D7DD-4CD1-A657-4AE4FCF5F879}" /> <Execution ProcessID="1536" ThreadID="4608" /> <Channel>System</Channel> <Computer>PathLenovo</Computer> <Security UserID="S-1-5-19" /> </System> <EventData> <Data Name="SleepTime">2010-11-21T16:01:23.849619900Z</Data> <Data Name="WakeTime">2010-11-21T16:01:31.139601200Z</Data> <Data Name="SleepDuration">1860</Data> <Data Name="WakeDuration">636</Data> <Data Name="DriverInitDuration">463</Data> <Data Name="BiosInitDuration">274</Data> <Data Name="HiberWriteDuration">0</Data> <Data Name="HiberReadDuration">0</Data> <Data Name="HiberPagesWritten">0</Data> <Data Name="Attributes">20736</Data> <Data Name="TargetState">4</Data> <Data Name="EffectiveState">4</Data> <Data Name="WakeSourceType">4</Data> <Data Name="WakeSourceTextLength">12</Data> <Data Name="WakeSourceText">USB Root Hub</Data> <Data Name="WakeTimerOwnerLength">0</Data> <Data Name="WakeTimerContextLength">0</Data> <Data Name="WakeTimerOwner"> </Data> <Data Name="WakeTimerContext"> </Data> </EventData> </Event>

Hi, Thanks for the post! The situation is described seems like a ThinkPad hardware issue which is discussed here: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T61P-Randomly-Going-to-sleep/td-p/79038 You can refer to this thread http://social.answers.microsoft.com/Forums/en-US/InternetExplorer/thread/9017bdac-9fef-4f7c-9e56-47976d30b7e3 . I recommend you also contact the ThinkPad support. Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information. Regards, MiyaThis posting is provided "AS IS" with no warranties, and confers no rights. | Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.