I have a HP Slimline 2360 Desktop that won't work at all. As soon as I press the start button it makes one continuous beeping noise, which lasts for 15 sec, then it goes away for 5 sec and comes back again. The screen does not show anything other than black. Would this mean that there is a hardware issue? The tower is very hard to work in as it is so tight. Could it be faulty RAM or Hard drive. Thanks for any help.