my system;
intel i7 920 d0 3.8ghz
asus p6tse
sapphire 5870 1gb
team xtreem 6 gb 2000 mhz 9-9-9-27(but actual settings is 1600mhz 7-8-7-21, command rate 1T )
thermaltake toughpower 750w

just as you can see at the videos, there is no BIOS load at the start of the computer. when i did not overclock system, no problem occurs.

my actual BIOS settings are also at the video. this problem seems like cold boot. I don't understand. I use 0805 BIOS.

part 1;
part 2;
part 3;

I know the videos are not good job, but this is only best way to explain my problem well.
new bios settings are below