BSOD after changing from 4GB to 8GB SODIMM RAM

Have you checked that the RAM is compatible with the motherboard?

I've checked the latest dumps, have you removed the Webroot program from your computer too? If not, I would remove the program.

Code:

kd> lmvm atipmdag
start             end                 module name
fffff880`03e0e000 fffff880`0447d000   atipmdag T (no symbols)           
    Loaded symbol image file: atipmdag.sys
    Image path: \SystemRoot\system32\DRIVERS\atipmdag.sys
    Image name: atipmdag.sys
    Timestamp:        Thu Jun 17 13:45:34 2010 (4C1A18EE)
    CheckSum:         00628C68
    ImageSize:        0066F000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

The graphics card driver seems to be causing problems, and is still outdated, I would run the automatic installation program provided by AMD. It may be worth checking the HP support page for your model for driver updates and documentation.

I have ran their automatic driver installation before and it still came up with the same driver,
so my graphics card driver is not outdated and I have had these BSOD without the driver installed at all,
any chance you could check through these dumps for any other issues then the ones you have already stated.

In the end it might just come down to compatibility but I have checked that my ram is compatible with my motherboard,
also note that I haven't had a BSOD again but I am sure it will come back.

Cheers,
Alex :)

You haven't attached any new dump files in your post.