Windows 7 - Hibernate/Sleep Event 41 Reboot Issues

Question

Have a HP ProBook 5310m
I am getting a series or errors. Below are two examples from the event viewer. Behaviour is hat when I hibernate, all seems fine but when I try and restart the system runs a BSD dump, which fails every time, then shuts down. Restart etc.
I have not added any new hw and drivers etc pretty up to date. Not sure where to look - problem went away for a few weeks and just returned and happened 3 times today.
Thx
"The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly."
Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          13/08/2010 4:52:10 PM
Event ID:      41
Task Category: (63)
Level:         Critical
Keywords:      (2)
User:          SYSTEM
Computer:      Leighton-PC
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
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>41</EventID>
    <Version>2</Version>
    <Level>1</Level>
    <Task>63</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000002</Keywords>
    <TimeCreated SystemTime="2010-08-13T06:52:10.293620700Z" />
    <EventRecordID>43914</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="8" />
    <Channel>System</Channel>
    <Computer>Leighton-PC</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BugcheckCode">80</Data>
    <Data Name="BugcheckParameter1">0xb3f18008</Data>
    <Data Name="BugcheckParameter2">0x1</Data>
    <Data Name="BugcheckParameter3">0xad8e6b32</Data>
    <Data Name="BugcheckParameter4">0x0</Data>
    <Data Name="SleepInProgress">true</Data>
    <Data Name="PowerButtonTimestamp">0</Data>
  </EventData>
</Event>
Second one
Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          13/08/2010 1:54:24 PM
Event ID:      41
Task Category: (63)
Level:         Critical
Keywords:      (2)
User:          SYSTEM
Computer:      Leighton-PC
Description:
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
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>41</EventID>
    <Version>2</Version>
    <Level>1</Level>
    <Task>63</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000002</Keywords>
    <TimeCreated SystemTime="2010-08-13T03:54:24.045618600Z" />
    <EventRecordID>43724</EventRecordID>
    <Correlation />
    <Execution ProcessID="4" ThreadID="8" />
    <Channel>System</Channel>
    <Computer>Leighton-PC</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BugcheckCode">0</Data>
    <Data Name="BugcheckParameter1">0x0</Data>
    <Data Name="BugcheckParameter2">0x0</Data>
    <Data Name="BugcheckParameter3">0x0</Data>
    <Data Name="BugcheckParameter4">0x0</Data>
    <Data Name="SleepInProgress">true</Data>
    <Data Name="PowerButtonTimestamp">0</Data>
  </EventData>
</Event>

Answer 1

First you need to follow these below steps to know the technical information of the Blue screen error message.
a. Right click Computer.
b. Click on Properties.
c. Advanced System Settings.
d. Advanced Tab.
e. Startup and Recovery Settings.
f. Uncheck Automatically restart.
Secondly I would recommend you to update the graphic drivers and see if it makes any difference. You must be logged on as an administrator to perform these steps.
a.       Open Device Manager by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking Device Manager. If 
          you are prompted for an administrator password or confirmation, type the password or provide confirmation.
b.       In Device Manager, locate the Display adapter, and then double-click the device name.
c.       Click the Driver tab, and then click Update Driver and follow the instructions.
Now try to follow the below provided link to Update a driver for hardware that isn't working properly and check for the issue.
Update a driver for hardware that isnt working properly
http://windows.microsoft.com/en-us/windows7/Update-a-driver-for-hardware-that-isnt-working-properly   
You need to visit your computer manufacturer's website to get the latest drivers.
If the issue persists then you may use the Event Viewer to look for information about the issue.
Follow this below Microsoft article.
How to view error messages in Event Viewer
http://support.microsoft.com/kb/947321
You can check for information about the issue by the time it occured.
You can post that information here to help us narrow down where to focus.