Troubleshoot:Computer shuts down randomly after using for long time Error

Computer shuts down randomly after using for long time

Original Title: Windows 7 not shutting down
Why doesn't Windows 7 shut down after it's been on for a long time - why does it hang and what can I do apart from switch it off at the On/Off switch

Solutions to the Problem Computer shuts down randomly after using for long time

Download SmartPCFixer to Fix It (Free)

Hi,
As I understand the issue, computer shuts down randomly after using for long time.
Please let me know if this is not correct.
Before proceeding with the troubleshooting steps I may need a few more information to understand the issue better.
1.
Did you make any software or hardware changes on your machine prior to this issue?
2.
Are you getting any error messages?

Let’s follow these methods & check if it helps.
Method 1:
If you have any external device connected to the machine apart from mouse and keyboard, you may unplug them & check if the issue persists.
Method 2:
You may boot into ‘safe mode’ and check if the issue persists.
If the does not occur in Safe Mode, you may put the computer in clean boot to check software conflict.
Step 1:
In Safe Mode Windows 7 will start with a limited set of files and drivers.
Startup programs do not run in safe mode, and only the basic drivers needed to start Windows are installed, follow the steps to boot the computer in safe mode.

a.
Restart the computer.

b.
Start tapping F8 key.

c.
You will get advanced boot option window.

d.
Select the option ‘Safe mode’.

Step 2:
Clean boot will start Windows7 by using a minimal set of drivers and startup programs and helps to eliminate software conflicts.

The following link has steps showing how to perform clean boot:
http://support.microsoft.com/kb/929135
Note: Please ensure that the computer is set to start as usual by following the
step 3 from the article.
Additionally you may check in event viewer for related logs:
http://windows.microsoft.com/en-US/windows7/What-information-appears-in-event-logs-Event-Viewer
You may refer the link for additional information:
Ways to improve your computer's performance
http://windows.microsoft.com/en-us/windows7/Ways-to-improve-your-computers-performance
Give this a go; I’m confident you will find what you need here.
But if you have any trouble with this, come on back to this post and I’d be happy to work with you on other options.

Tweak IE Options

• Open Internet Explorer.
• Go to "Tools > Internet Options > Advanced Tab".
• Uncheck "Enable third-party browser extensions".
• Click "Apply".
  
• Reboot your computer.

Another Safe way to Fix the Problem: Computer shuts down randomly after using for long time:

How to Fix Computer shuts down randomly after using for long time with SmartPCFixer?

1. Click the button to download Error Fixer . Install it on your system.  Run it, and it will scan your system. The errors will be shown in the scan result.

2. After the scan is finished, you can see the errors and problems which need to be fixed.

3. The Fixing part is finished, the speed of your computer will be much higher than before and the errors have been removed.

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