I have had a similar problem with my Hewlett Packard DV6000. It had to be fixed soon after I bought it. The third time it went for repair they installed a new motherboard. That was just over a year ago. I have now had exactly the same problem again, even though I do not use the machine very often. Lots of people report the same fault: a blank screen, one long and 2 short beeps. They want in excess of £200 to fix it (i.e. install a new motherboard) as it is now out of warranty. Their customer service team are fully aware of the fault. This machine is less than 3 years old and I spent over £800. It is criminal. Do not buy any thing HP. I won’t. They deserve to go the way of Amstrad. Into oblivion.