I have an Inspiron 6000 that will start to come on. The cap locks light blinks 9 times and then turns off. I'm sure that is a "post" code of some type, but can't find any documentation of that on this model.
I had this same problem, and searched the interwebs high and low for what the blinking caps lock code meant. here is what i found out after giving up on finding the answer(Just so everyone in the future can know): the laptop booted only when there wasn't ram in the first dimm slot. So, from what i got, it means that one of the dimm slots is going bad. take each out one at a time and try booting. of course this leads to believe that eventually, more components on the mobo will start to go bad as well. At least you wont need to