|Flashing the bios to a different version usually does NOT auto load the Cmos contents that go along with the changed bios version. If the Cmos contents are still those for a previous bios version, your changed bios version probably won't work properly.|
To make sure the Cmos contents match the changed bios version, you should always go into the bios and load bios defaults, after having flashed the bios.
Why did you flash the bios ?
Flashing the bios is NOT a fix-all.
99% of the time doing that will NOT fix whatever problem you were having, unless you needed to flash the bios to support using a newer cpu.
You MAY have flashed the bios with the WRONG bios update !