Hi Captain, thanks for the help.
PC is not overclocked
Bios is the latest and set to default
I ran the memtest and got no errors
I ran the SFC check and got no errors
2 out of 3 drives passed the disk diagnostics
Ther 3rd, Raptor, gave a "cable test, write sector error" using WinDlg
despite me changing sata and power cables several times, this drive I have RMA'd.
As this is not the OS drive dunno if this will fix my reboot problems or not.
Did mange to glean any info off the minidump files?
Thanks for any help