hello.
I have a problem with a motherboard asrock h61m-itx to the next.
after power failure bios motherboard goes into default.
the battery is new and the motherboard ....
sometimes does not default but an error on startup of windows 7 saying that some kind of hardware was removed or altered and required to enter and send it to boot windows normally.
seems that the power failure alters something in the bios.

thank already provided the answers and sorry for my bad English.