Just last night, when I went to boot my computer, it's started hanging at the BIOS screen.
It beeps once, loads the main page, then hangs at the "Testing Memory" line... it doesn't display the device's and doesn't go anywhere.
I haven't made any hardware changes for months and it hasn't been acting strangly until then. It shut down perfectly normally the time before.
It's a Gigabyte GA-965p-DS3 motherboard.
My initial suspicion is something to do with the CMOS battery. Is my thinking correct?