PC suddenly crashes

[videogamer1950]

I build a computer four days ago and it is working fine. But in the past two days it suddenly crashed twice, when only surfing the internet. My monitor said searching for signals and the power light was blinking. No fan was moving either. I could not turn it back on, so I had to turn off my psu. And after turning it back on my PC worked fine again. What happened? I need a quick response because I still have a guaranty on all of the parts. Thx

 

[Yingda Wang]

No idea, I thought there was instructions on how to post an answerable question

 

[InvalidError]

The power LED blinking usually means your PC is on standby/sleep mode. It should wake up if you touch a keyboard key, press a mouse button or short-press (half a second) the power button.