Swapped storage and memory, now no screen.
Swapped storage and memory, now no screen.
Hello, your HP compaq 2400 is still working after the upgrade. The lack of display and beeps suggests a power or communication issue. Check the power connections and ensure the new SSD is properly seated. Verify that the RAM sticks are correctly installed and functioning. If the fan runs but nothing else appears, there may be a driver or firmware problem—try updating the BIOS or checking for compatible drivers. Also, listen carefully to any error sounds on the motherboard; they can indicate hardware faults.