Had a look at your dumps, you have four different error codes between five dumps, have a look at the links for more info/probable causes of each one, this is the results of the four most recent ones
0xA
BSOD Index Probably caused by : aswSP.SYS
0x50
BSOD Index Probably caused by : dxgmms1.sys or watchdog.sys
0xD1
BSOD Index Probably caused by : msahci.sys
0x8E
BSOD Index Probably caused by : ntkrnlpa.exe
Some dumps blame a hardware issue, they seem too random to be a problem with a specific driver
I would recommend you run some basic hardware tests to check ram and HDD
RAM diagnostic
Memtest86+ - Advanced Memory Diagnostic Tool download, burn, boot from it, recommend running for min 5 passes or overnight if poss
HDD diagnostic
HD Diagnostic details at link
Also run a system file integrity check for corruption to do this
start>cmd.exe>right click run as admin>type sfc /scannow
You also have some old drivers on your system look into updating these
iirsp.sys 13/12/2005 21:48:01
djsvs.sys 12/04/2006 00:20:11
nfrd960.sys 06/06/2006 21:12:15
adpu320.sys 28/02/2007 00:03:08
adpahci.sys 01/05/2007 17:29:26
arc.sys 24/05/2007 21:31:06
SiSRaid2.sys 24/09/2008 18:19:45
sisraid4.sys 01/10/2008 21:52:22
adp94xx.sys 05/12/2008 23:59:55
lsi_fc.sys 09/12/2008 22:28:47
To update drivers dont use windows update or update driver function from device manager, google the specific driver find out what hardware/program the driver belongs to and visit manufacturers website for latest download
I would start with raid drivers and ahci drivers from your mobo manufacturer
Hope this helps, post back your results, any questions fire away
