When I turn on my Computer, the Monitor, Keyboard & Mouse are not recognised and I get a beep, beep beep from the Computer.
I removed the Hard Drive, put it into another computer, formatted the Hard Drive and reinstalled the system (XP Home) with no problems. I then put the Hard Drive back in and changed the RAM Sticks but I still have the same problem.
As I cannot access the monitor or keyboard or BIOS how can I sort this problem?
You machine is having id beeping while having a memory slotted into it, to prove that you're memory is not functioning, remove it and boot the machine without the memory, you'll notice that you can hear the same beeps. Meaning it's like you machine doesn't have a memory slotted in it.