Well the BIOS will only be telling you the idle temp, so it probably won't be much good anyways. Have you tried temperature monitoring applications such as speedfan and coretemp? Run Prime 95 for a while (a few hours, may take less to reach the peak temperature), and see if the temps are within the processor's limits.
I use BIOS too for OCing.
Im not sure what version my BIOs is but then you should have several main pages on the top. For example: Advanced, Power, Boot, etc.
to see the current temps while running BIOS, go to Power then Hardware monitoring (i believe its that name). then you see a whole list of your hardware temps. my CPU runs at about 41C degrees when running BIOS.
when i run my windows, i use SpeedFan. http://www.almico.com/speedfan.php
may not be the best but it tells you the temperature of you GPU, some chips on your motherboard, hard drive, and CPU.
if a flame appears to the left of the hardware name, then its hot.
if its a blue arrow, that mean its too cold, which I think isnt bad
if its a green check, that means it is at the perfect temperature.
try running some CPU or GPU stressing programs and observe the numbers that SpeedFan tells you. this might help you know if your hardware is too hot.
it doesnt tell you your RAM temp i believe, but could still help you