Power supply not working in my new build

[Schooly]

Hi , I have got this components:
- intel core i5 2400
- Asus geforce gtx 550 ti
- gigabyte z68xp-ud3
- Gigabyte powerock 500 watt
- seagate 1 tb
- (2×4gb) kingston rams

after i assembled all the component in the case , it worked for i while and then stoped working at all
no power comes from the psu , so whats the problem ?
* sry 4 ma Eng

 

[sk1939]

Your power supply probably died if no power comes from the PSU.

 

[ko888]

Defective power supply.

If it's still under your vendor's product exchange period have it handled that way, otherwise contact GIGABYTE for RMA service.

Even the premium PSU manufacturers suffer from DOA products. You never know how roughly it's been treated during shipping.