The problems have returned. I shutdown laptop at night and on power up everything sets up then it will just restart again randomly. Could Opera cause this as this is generally opened first, I am using an older version of Opera which has bookmarks. The only hardware attached is a hid compliant mouse. One of the warnings in event viewer relates to Broadcom Ethernet Link but this is not attached. This is the last event log:
Warning 24/09/2014 06:26:48 ESENT 509 (7)
Warning 24/09/2014 06:26:48 ESENT 507 (7)
Error 24/09/2014 06:24:19 Eventlog 1101 Event processing
Warning 24/09/2014 06:24:14 k57nd60a 4 None
Critical 24/09/2014 06:23:58 Kernel-Power 41 (63)
Error 24/09/2014 06:24:18 EventLog 6008 None
Warning 24/09/2014 06:22:44 DNS Client Events 1014 (1014)