Windows 7: BSOD using PC, error 0x00000050, PAGE_FAULT_IN NONPAGED_AREA

Hi,
im from Dominican Republic, so, my english is not very good. I apologize.
I have a clone PC (builded for myself).
My pc is working perfectly, but freeze with BSOD every moment (can be 10 min, 30 min, an hour, or couple hours), sometimes, leave me alone, but always come back.
Please help me, because i dont know what to do.
i attached the file using SF diagnostic tool.

Welcome
Run for 8 passes.
Then test each stick in a good slot for 6 passes.
If you have dual channel, the results may be incorrect, if shows pass.
Guide to using Memtest86+ - Geeks to Go Forums

Hi Rich, thx for your support.
i dont understand what is a pass.
are you telling me that is an ram memory issue?
because i habe 4 GB (2 stick of 2GB each one). i tested one first and then the other, in both shows BSOD. thats means that my two ram memory stick are broken?

Use the test as shown. A pass is a full cycle, you will see how many runs it has made. Do it over night, that is long enough
If both sticks are bad, I am afraid thats your Mother Board, but take the test as shown and we will decide.

cool, lets try.

Hope you have ram problems, thats cheap a MB is not.

ok, i tested my sticks with memtest and they are fine, i did everything i saw about this, and nothing changed.
The only thing left was reinstalling and updating windows.
I changed to windows professional service pack 1, update it, and THE PROBLEM IS FIXED!
I have a couple days without crash, and this BSOD is SOLVED.

Thx richc46 for you support.