if you can't boot your machine into the OS the beeps are very important!!!

i tested my uguru setup and set it to beep on any fan under 1000rpm. I set this on a non-existant fan meaning it was below the limit. My uguru sounded the alarm but nothing else happened (the actual uguru display stays the same) - you wouldnt realise the alarm was sounding, however if the temps rise high enough then the uguru will automatically shut the machine down before any components can be damaged.