In article ,
Nick G writes:
Just another thought, you say it nearly gets to the desktop and then
reboots. This suggests to me that it could be a corrupted driver. Have you
tried re-installing Windows? If it is a corrupted motherboard driver then
this may possibly cause your problem.

Could it be a virus? ISTR that there was a virus that was very common a
year or so ago (I can't recall its name now) that caused a reboot.
--
John Hall Weep not for little Leonie
Abducted by a French Marquis!
Though loss of honour was a wrench
Just think how it's improved her French. Harry Graham (1874-1936)