COMPUTER NOT TURNING ON

Hello Everyone!!!!

SYSTEM SPECS:
GT 730
XEON X3430
ECS H55HM
600W PSU
8GB DDR3 RAM
256 GB SSD

My name is Ronak I work at …………. so my question is
1. WHEN PLUGGED IN, FAN AND CPU COOLER LIGHTS LIGHT UP FOR A SPLIT SECOND
2. WORKED FOR A MONTH THEN RANDOMLY STOPPED WORKING
3. NO BEEPING CAN BE HEARD
4. HAVE TRIED CLEANING THE INSIDE
5. HAVE TRIED UNPLUGGING THEN REPLUGGING POWER SUPPLY CABLE.

THANKS IN ADVANCE.

Irrelevant employer name provided by OP removed