Not all mobos need the battery removed for a hard clear. You need to remove the main power source (don't have to remove the rtc battery), then there is usually a pinout that need to be closed with a jumper. You wait 30 secs tops, remove the jumper, reconnect the power. Switch on...
But, when you replace memory or ram, you shouldn't need to do that. AFAIK all modern bioses give you a facility to clear the CMOS data + ESCD from the BIOS Setup it self. Thats all you need to do.
And, windows shouldn't complain that you have a new processor, but after clearing the ESCD, windows will usually rescan the hardware. Windows is usually pretty crap at that so you end up with "Canon ..... scanner #2", "Tecom Bluetooth adapter #2", "this hardware #2", "that hardware #2", "you're gonna have a hell of a time making this look neat #2"...
..."What the hell is USB2? I don't understand. Please insert a CD or something that will educate me"...
<b><font color=red>"They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety."</font color=red><font color=blue> - Benjamin Franklin</font color=blue></b>