Hi zigzag, thanks for the great response, below you can see how I got on updating drivers
mdmxsdk.sys - Modem - Could only find 2007 dated drivers
xaudio64.sys - Modem - " "
CAX_CNXT.sys - Modem - " "
CAXHWAZL.sys - Modem - " "
CAX_DPV.sys - Modem - " "
tifm21.sys - TI card reader - Acer shows this as current version for Windows 7 x64
nscirda.sys - Infrared Port - Acer shows this as current version for Windows 7 x64
SCDEmu.SYS - PowerISO - uninstalled
DKbFltr.sys - Dritek Launch Manager - Uninstalled
netw5v64.sys - Wifi - Updated
b57nd60a.sys - wifi - Updated
For the ones that say Acer shows........ I could not find newer drivers on the net.
I guess I will run the machine for a couple of days and see if it crashes again