Windows 7: BSOD when I was running a pdf and chrome (I was only on facebook)

Hi, I have a problem with my Netbook Aspire One D255E: today my netbook shut down after this BSOD ( I attach a photo), after I restart the desktop takes too much minutes to appear, and when it does, an advise window appear (like the other three photos shows).
What's the problem? What I have to do to solve the problem???
Thank you for the attention, please help me!

I follow the steps: I download SF_Diagnostic_Tool and I attached the folder with the .dmp and .txt files

http://www.sevenforums.com/crashes-d...tructions.html

I attached the file now editing my last post.. any help?

There are no latest dump files

Please upload your msinfo32.nfo file. To get this: Start Menu -> Type msinfo32 into the Search programs and files box -> When it opens, go to File, Save -> Save as msinfo32.nfo and save in a place you will remember -> Let it finish the process of gathering and saving the system info -> Right click the .nfo file, click send to compressed (zipped) folder -> Upload the .zip file here.

Please upload your msinfo32.txt file. To get this: Start Menu -> Type msinfo32 into the Search programs and files box -> When it opens, go to File, Export -> Save as msinfo32.txt and save in a place you will remember -> Let it finish the process of gathering and saving the system info -> Right click the .txt file, click send to compressed (zipped) folder -> Upload the .zip file here.

That's it

Avast contributes in BSOD-s, please uninstall it:

avast! Uninstall Utility | Download aswClear for avast! Removal

Uninstall the Norton Back up tool as well:

Uninstalling Norton Online Backup
Re: How do I remove Norton Online Backup installat... - Norton Community

Microsoft Security Essentials.

Recommended from a strict BSOD perspective, compatibility & stability compared to other antiviruses/internet security software. It is free and lightweight:-

• Microsoft Security Essentials - Free Antivirus for Windows
  • Malwarebytes : Malwarebytes Anti-Malware removes malware including viruses, spyware, worms and trojans, plus it protects your computer
    • Good and Free system security combination.

Run a full scan with both (separately) once downloaded, installed and updated.

Use the default windows back up:

Backup Complete Computer - Create an Image Backup

If its wireless, match your device from here:

• ATHEROS Wireless drivers for Windows

If its not a wireless, match your device from here:

• ATHEROS Network drivers for Windows

Reduce items at start-up. Nothing except anti-virus is required:

• Startup Programs - Change
• Troubleshoot Application Conflicts by Performing a Clean Startup

Perform a System File Check:

1. Click on the start
2. Type CMD on Search
3. Left click and Run as Administrator
4. Type SFC /scannow

Full tutorial here:

• SFC /SCANNOW Command - System File Checker

Disk Check on your hard drive for file system errors and bad sectors on it:

• Disk Check

Let us know the results.

Hi,
I downloaded Microsoft Security Essentials..Malwarebytes, SuperAntiSpyware: separately scans give no infected files here.
I done an image backup on a 16gb usb.
I reduce items at start-up to antivirus,acer, and microsoft items.
I done a System file Check and the result was no violations found.

It seems everything is OK, can be the problem solved or I can have an other BSOD?

You should wait for another week before considering as solved