Super Flower 750, possible problem?

[TheMightyCad]

Looking for some advice...

I bought a Super Flower 750 from OCUK and installed it in a new case with an (HP) IPM87-MP motherboard from an HP Pavillion PC yesterday. I also added a Saphire R9-280x (Vapor-X) graphics card.

It worked fine last night and today but it stopped working when watching a video and it won't power up now. Tried different power cable and socket, so no issues there. Also checked connections inside box, all secure.

Do you think this is a faulty power unit?

 

[ShivP]

Try a test like this - https://www.youtube.com/watch?v=5FWXgQSokF4

 

[TheMightyCad]

Try a test like this - https://www.youtube.com/watch?v=5FWXgQSokF4

Thanks Shivy... will try that tonight when I getbin.

I've got a feeling it might be the mobo as I tried the old psu and still no go.