Thank you everybody for solutions around my strange rebooting. It looks that I have problem with my Geforce GTS. I used Detonator4 21.81 and that produced crash in every 5 minute. No more crashes under Detonator 21.83 but I have display problems in Hypergraph and Hypershader. Which driver and settings could be perfect to work with maya4? Maybe Detonator3 not 4? Which version 1x.xx.... or 6x.xx... or???
Windows 2000 SP2
ASUS A7A 266 motherboard
AMD Thunderbird 1.4GHZ
2*512MB DDR RAM
ASUS 7700 GeForce2 GTS Deluxe
PS2 keyboard and mouse
Thank You