How To View Computer Reliability And Problem History In Windows 7?

Here are the steps to open Reliability Monitor:

1. Go to Control Panel –> System and Security –> Action Center.

2. Under the Maintenance section, click on the chevron (down arrow) to view more options that are hidden by default.

3. Under the ‘Check for solutions to problem reports’ section, click on ‘View reliability history’.

4. You will then see a message saying ‘Reliability Monitor is generating the report. Please wait…’.

You can now view all the major problems that occurred on your System on a timeline, that can be toggled to ‘Days’ or ‘Weeks’. Clicking on a date or week will give complete list of all failures that happened on that day or in that week. The graph represents the system’s stability on a scale of 1 to 10. 10 is the most stable state while 1 is the least. Answered Aug, 10 2011

I am pleasure to help you...just follow the next steps:
1 Click the "Start" button, then click "Settings" (in Windows 2000 only) and "Control Panel."

2 Double-click "Administrative Tools." If you do not see this option, click "Switch to Classic View" in Windows XP, "Classic View" in Windows Vista or "View by: Small icons" in Windows 7.

3 Double-click "Event Viewer."

4 Click the triangle-shaped icon next to "Windows Logs" to expand the category if you are running Windows Vista or 7. Skip this step if you are running Windows 2000 or XP.

5 Click the "Security" category under "Windows Logs." Each successful (and unsuccessful) computer login is displayed. Click the "Date and Time" column to sort entries in ascending or descending order. Successful login attempts display the words "Audit Success," while unsuccessful login attempts display "Audit Failure."

6 Click an entry to show the name of the Windows account used to log in to the system. Answered Aug, 05 2011

1. Click on the Action Center icon in the notification area of the taskbar, and click on Open Action Center. A) Go to step 3.

OR

2. Open the Control Panel (All Items View).
A) Click on the Action Center icon.

3. Click on the Maintenance drop down arrow to expand it, then click on the View system history link under the Check for solutions to problem reports section.
4. At the bottom of the Reliability Monitor, click on the View all problem reports link. 5. To Delete a Single Problem
A) Right click on a listed problem you want to delete, and click on Delete. B) Click on the Delete button to confirm deletion.
C) Repeat step 5 for any other problem you wish to delete.

D) Go to step 7.

6. To Delete All Problems
A) At the bottom of the Problem History window, click on the Clear all Problem History button.
B) Click on the Clear all button to confirm this action.
C) The problem history is now clear.
7. When done, you can click on OK to return to Reliability Monitor or close the Problem History window. Answered Mar, 07 2011

Look here:

 Windows® Even Viewer, to view log-in information. 
1. Press + R and type “eventvwr.msc” and click OK or press Enter.
2. Expand Windows Logs, and select  Security.
3. In the middle you’ll see a list, with Date and Time,Source, Event ID
and Task Category. The Task Category pretty much explains the event,
Logon, Special Logon, Logoff and other details. 

Answered Nov, 06 2010