Windows7 64-Bit Memory

I'm fairly pc literate, but I swear when it comes to repairing my own pc I kind of have some difficulties so please bear with me.

I just bought this pc and received it no Wednesday. Since using it, it has crashed 1-2 times every day. The common errors I gets are system_service_exception and pfn_list_corrupt.

From what I gathered it was either my drivers or my memory. So I ran a memory diagnostic test, and it came up with hardware problems both times but when I restarted my pc the first so that it would tell me the errors, my pc crashed immediately with a pfn_list_corrupt error. When I ran it a second time my PC started normally but nothing ever read off to me what the problem was.

I have an HP Pavillion Notebook and am using Windows 7 64-bit with 4 gb of RAM. Any ideas or troubleshooting I can do to better evaluate and fix this problem? I really need this notebook for college soon.

Also my pc is a refurbished pc from compusa


My pc crashed again and this time the error was memory_management and the troubleshooting read this:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.
Locale ID: 1033

Additional information about the problem:
BCCode: 1a
BCP1: 0000000000041790
BCP2: FFFFFA80019D4180
BCP3: 0000000000000201
BCP4: 0000000000000000
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1

Files that help describe the problem:
4 answers Last reply
More about windows7 memory
  1. Can you take out each stick of RAM and test them simultaneously ?
  2. Sounds like a bad memory stick. Random blue screens and crashes, especially on a fairly new install of the OS and drivers, so you know that your software is clean, is usually, 9 times out of 10, memory related.
  3. I'm fairly certain it's definitely a problem with my memory hardware. I'm not sure about testing my ram individually but I could give it a try.
  4. Try testing it with memtest for about 4-8hrs
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