Crashes in XP

[jonnyfung]

Hi all,
Only recently, my computer has been randomly crashing. I have no idea when it's going to happen. It sometimes happens when I'm running an intensive program or sometimes when I'm just using Word or iTunes. Sometimes I get a BSOD and sometimes Windows just freezes. I read a lot about memory failures and updating drivers and I've run MemTest and updated my NVidia drivers but it still happens. I can't play any games because after 5 minutes I will a get a PAGE_FAULT IN_NONPAGED_AREA BSOD. Can anybody help? I've attached some txt files of dumps I've run through Windows Debugging tools.
Thanks

 

[jonnyfung]

Here are some more dumpfiles
My system specs are:

Processor: AMD Athlon XP2400+ Not overclocked
Motherboard: Soltek L-75FRN2-L
Ram: 512 MB One Stick
GPU : NVidia GeForce4 MX440 128Mb running latest drivers
OS: Windows XP Professional

 

[jonnyfung]

Can anybody check my dumpfiles for me?

 

[Tmagic650]

Replace your memory. If you have 2 sticks, remove 1 and see if your system stablizes

 

[jonnyfung]

Okay will try that. Thanks for your help

 

[jonnyfung]

I tested my RAM with MemTest86+. First it came up with nothing but then I changed the Memory sizing option to BIOS-All and loads of errors came up. Why do no errors come up when I run the default test?

 

[Tmagic650]

What is Bios-ALL setting? Do you have a "optimum or a default" bios setting available? Did you run Memtest first without changing settings, when Memtest showed no errors?

 

[jonnyfung]

I ran Memtest without changing any settings but it came up with no errors at all. I then changed the 'Memory Sizing' option and by test 3 there were about 37000 errors.

 

[jonnyfung]

Computer crashed again recently - here are some dumpfiles: