BSOD after reinstalling windows.

Hello everybody.Im new to this forum.
Im going to college and I recently bought an used laptop.
I bought a Dell Latitude E6520 laptop.

First off the laptop was working fine but only 4 of 8 gb ram was usable .(win ultimate 32 bit )
So I thought why not format the laptop and use 64 bit.(so I could use 8 gb of ram)
Did a clean install, everything went fine , 8 gb ram was usable.Started installing the proper drivers, updating windows etc..

After 2 days or so BSOD started appearing.I never got BSOD so im not good at fixing it.
Please somebody check the dumps and locate the problem.
Also id like to mention that BIOS is locked.(ill really appreciate if somebody can unlock the bios, ill pay)

Thanks a lot

Please provide all the files following this tutorial so we can provide a complete analysis: Blue Screen of Death Posting Instructions

Here it is.

Reduce the start-up items, Antivirus software is basically whats required.

• Remove Startup Programs in Windows 7
• Clean Startup in Windows 7

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Avast! can be a cause of BSODs, please remove it and replace with Microsoft Security Essentials & the Free version of Malwarebytes, update and make full scans separately:

• Uninstallers (removal tools) for common antivirus software - ESET Knowledgebase
• Help protect your PC with Microsoft Security Essentials
• Malwarebytes Free

   Note

Do not start the trial version of MalwareBytes

You may also take a look at:

• Good & Free System Security Combination

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Test and Diagnose RAM Issues with Memtest86+:

• RAM - Test with Memtest86+

   Tip

• Pay close attention to Part 3 of the tutorial "If you have errors"
• Test the RAM with Memtest86+ for at least 7-10 passes. It may take up to 22 passes to find problems. Make sure to run it once after the system has been on for a few hours and is warm, and then also run it again when the system has been off for a few hours and is cold.

There you go..You might have found out the problem already.
Did you replace the RAM?

You should :) or remove the sticks that produced errors.

Glad you got it sorted :)