Why does my computer restart cyclically after a BIOS reset?

Question

motherboards

I had to reinstall Windows. I go into the BIOS, and there is a password. I don't know the password.
Did a reset by pulling out the battery on the motherboard. Then I got "cmos error".
I went into the BIOS, set the date and time, did load optimization. Save, exit. The computer reboots cyclically: it comes to the inscription GeFore 9400GT VGA BIOS, and reboot.
Removed one memory bar, then another, swapped. In general, I removed both strips of the black screen. There is no result.
I removed the video card, connected the built-in one, there is no result. Connected another hard drive, tried without a hard drive. Removed all peripheral devices, no result.
Motherboard Foxconn g31mxp n15235

Answer 1

now once again disconnected the battery and launched that's what I got
. I solved the problem by turning it off in the BIOS lan on board. Started up. ATP everyone.

Answer 2

Have you, as already advised, tried to turn on sata in ahci mode or vice versa, in ide?
And your hdd doesn't know what channel the ide is connected to. Sata apparently? Look for a sata connector so that the disk is not considered a slave when booting.