After reading this thread, and chatting with an HP tech (how useless that was), and my brother (a useful tech), here's what I did. I installed the new BIOS. Then shutdown my notebook. Removed the battery and AC power and held the power switch in the on position for 15 seconds (give or take) to clear it. I then reinserted the battery and plugged in the AC, booted into the BIOS, loaded the defaults, reconfigured the options (of which there are pitifully few), and everything has been running well since. I have a cooler machine and the fan on mine runs all the time, but there is almost no noise except under extreme conditions (i.e. gaming).