Computer Keeps Crashing

[SuperDave]

I'd like to scan your machine with ESET OnlineScan

•Hold down Control and click on the following link to open ESET OnlineScan in a new window.
ESET OnlineScan
•Click the button.
•For alternate browsers only: (Microsoft Internet Explorer users can skip these steps)

• Click on to download the ESET Smart Installer. Save it to your desktop.
  
• Double click on the icon on your desktop.
  

•Check
•Click the button.
•Accept any security warnings from your browser.
•Check
•Push the Start button.
•ESET will then download updates for itself, install itself, and begin scanning your computer. Please be patient as this can take some time.
•When the scan completes, push
•Push , and save the file to your desktop using a unique name, such as ESETScan. Include the contents of this report in your next reply.
•Push the button.
•Push
A log file will be saved here: C:\Program Files\ESET\ESET Online Scanner\log.txt

[jewelz]

Scan complete and 'No threats found'.

[SuperDave]

Ok. That sounds good. Are you still having problems?

[jewelz]

Yes, still crashing from time to time for no reason.  Sounds like it's not due to any virus though, what do you think?

[SuperDave]

Yes, still crashing from time to time for no reason.  Sounds like it's not due to any virus though, what do you think?

Usually crashing is caused by hardware or software problems and the BlueScreen View showed that most were  "Caused By Driver  : ntkrnlpa.exe. ." ntkrnlpa.exe is a core component of the Vista NT Kernel. The SFC scan showed that "Windows Resource Protection found corrupt files but was unable to fix some of them." I suspect this is the problem.
We should do some cleanup.

To uninstall ComboFix

• Click the Start button. Click Run. For Vista: type in Run in the Start search, and click on Run in the results pane.
  
• In the field, type in ComboFix /uninstall
  

(Note: Make sure there's a space between the word ComboFix and the forward-slash.)

• Then, press Enter, or click OK.
  
• This will uninstall ComboFix, delete its folders and files, hides System files and folders, and resets System Restore.
  

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Clean out your temporary internet files and temp files.

Download TFC by OldTimer to your desktop.

Double-click TFC.exe to run it.

Note: If you are running on Vista, right-click on the file and choose Run As Administrator

TFC will close all programs when run, so make sure you have saved all your work before you begin.

* Click the Start button to begin the cleaning process.
* Depending on how often you clean temp files, execution time should be anywhere from a few seconds to a minute or two.
* Please let TFC run uninterrupted until it is finished.

Once TFC is finished it should restart your computer. If it does not, please manually restart the computer yourself to ensure a complete cleaning.
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Looking over your log it seems you don't have any evidence of a third party firewall.

Firewalls protect against hackers and malicious intruders. You need to download a free firewall from one of these reliable vendors.

Remember only install ONE firewall

1) Comodo Personal Firewall (Uncheck during installation "Install Comodo SafeSurf..", Make Comodo my default search provider" and "Make Comodo Search my homepage" and uncheck any HopSurf and/or Ask.com options if you choose this one)
2) Online Armor
3) Agnitum Outpost
4) PC Tools Firewall Plus

If you are using the built-in Windows XP firewall, it is not recommended as it does not block outgoing connections. This means that any malware on your computer is free to "phone home" for more instructions. Simply put, Windows XP contains a mediocre firewall. This firewall is NO replacement for a dedicated software solution. Remember to use only one firewall at the same time.
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Use the Secunia Software Inspector to check for out of date software.

•Click Start Now

•Check the box next to Enable thorough system inspection.

•Click Start

•Allow the scan to finish and scroll down to see if any updates are needed.
•Update anything listed.
.
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Go to Microsoft Windows Update and get all critical updates.

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I suggest using WOT - Web of Trust. WOT is a free Internet security addon for your browser. It will keep you safe from online scams, identity theft, spyware, spam, viruses and unreliable shopping sites. WOT warns you before you interact with a risky website. It's easy and it's free.

SpywareBlaster- Secure your Internet Explorer to make it harder for ActiveX programs to run on your computer. Also stop certain cookies from being added to your computer when running Mozilla based browsers like Firefox.
* Using SpywareBlaster to protect your computer from Spyware and Malware
* If you don't know what ActiveX controls are, see here

Protect yourself against spyware using the Immunize feature in Spybot - Search & Destroy. Guide: Use Spybot's Immunize Feature to prevent spyware infection in real-time. Note: To ensure you have the latest Immunizations always update Spybot - Search & Destroy before Immunizing. Spybot - Search & Destroy FAQ

Check out Keeping Yourself Safe On The Web for tips and free tools to help keep you safe in the future.

Also see Slow Computer? It may not be Malware for free cleaning/maintenance tools to help keep your computer running smoothly.
Safe Surfing!