Anything in the event logs in either BIOS or Windows? The beeps should be triggering something.....
As for the pops, can you isolate where they're coming from? Can you MAKE the laptop do this along with the beeps? Or is it just a total random thing? Obviously it's not a good thing, but if we can get an idea on what you're doing when this happens, we might have an idea what's causing it.
