When a Vecow system emits 4 beeps and fails to boot, it typically indicates that the system memory (RAM) is not being properly recognized.

To resolve this issue, follow these troubleshooting steps:
1. Power off the system and disconnect the power source.
2. Open the chassis to access the motherboard.
3. Carefully remove the memory modules from their slots.
4. Clean the gold contacts (gold fingers) on the memory modules using a soft eraser or isopropyl alcohol, and clear any dust from the memory slots.
5. Firmly re-insert the memory modules back into the slots, ensuring they are securely locked.
6. Reassemble the system, reconnect power, and attempt to boot again.