BSOD every 2-3 hours

Hi,

Im getting BSOD every now and again - did a full Windows reinstallation, along with all component parts drivers update, but that still doesnt help. It doesnt occur in any specific circumstances, but usually after 2-3 hours of uptime and medium activity. Got some minidumps that can be useful for someone willing to help me. Can someone analyze these and find the possible cause for me, please ?

/edit Dumps are rar files with the extension changed to .txt

My computer specs are:


CORE 2 DUO 2,66GHz BOX E8200 6MB
ASUS P5K/EPU IP35
KINGSTON DDR2 2GB DUAL (PC800) KVR800D2N5K2/2G
INNOVISION 8600GT 512MB 128B PCI-ex 540/1000 HDMI
Windows Home Edition SP2 with all the latest updates

Inside the 6 MiniDumps:
BugCheck A, {7, 1c, 1, 804fc257}
Probably caused by : ntkrnlmp.exe

BugCheck 1000007E, {c0000005, 0, b69b0be8, b69b08e4}
Probably caused by : nv4_disp.dll

BugCheck 19, {20, 898e9a00, 898ea670, b8e99fc}
Probably caused by : ACPI.sys

BugCheck 10000050, {bafab368, 0, b5a97d83, 0}
Probably caused by : kmixer.sys

BugCheck 10000050, {80000023, 0, 8051a312, 0}
Probably caused by : memory_corruption

BugCheck 1000008E, {c0000005, bf8319f9, b688d0c5, 0}
Probably caused by : memory_corruption

Looks like drivers (For Sound and Video) require updating, actually do them all, from your manufacture driver support download page.

Also download and test your Ram with Memtest (http://www.techspot.com/vb/topic62524.html) (for 7 Passes)

I downloaded the latest driver updates before i actually posted here. Im going to try and remove 1 ram module and try and run it on 1 GB for the time being, see if that helps. If that fails, ill just swap ram modules and do it all over again. Maybe its one of these - had a similar problem before.