No. As has been said twice, clearing the CMOS only sets it back to defaults and does NOT require a bios flash.
Now with what you describe - it sounds more to me like your keyboard bios (which is separate from the system bios) is fried - or you have a Dallas-chip type real time clock - which contains the battery - and it's dead. Either way, the motherboard is scrap, you can buy a good used replacement motherboard for less than the price of a replacement Dallas chip and you will never be able to find a replacement keyboard bios much less change it - it's soldered in.
Have you removed the USB adapter yet? If not, please do so and see where you stand - I've personally seen those things short out a motherboard if installed incorrectly.
Do not overlook the possibility that the power supply is going south.
Last edited by glc; 03-05-2003 at 04:02 PM.