Can a low CMOS battery cause this?

Hi, my co-worker’s got a desktop PC which when you go to boot up, the motherboard speaker emits a low, sort-of grinding sound, and the lights on the the top of the keyboard just flutter really fast, and nothing else happens. No POST beeps of any kind occur at all. I checked her power supply with a multimeter, and it’s reading correct voltage at both the board connector and at the hard drive, so it isn’t that. Also checked the processor as well, and nothing seems to be blown. However, neither the main fan nor the processor/ heat sink’s fan powers up AT ALL. Can this be caused possibly by a dead or nearly-dead CMOS battery?