Black screen randomly after a short crash sound. Pc still running.

[paulchro]

Hello, i recently changed my tower and my psu. Before i changed the psu i had an old one that has short cables and i had to buy an adaptor for 4pin cable to reach the motherboard. When i powered up the pc after that the adaptor melt, (but everything else was fine) and then i decided to changed the psu.

After that im facing a problem. My screen randomly goes black after a while, while fans keyboard etc work. It doesnt matter if im on a game or just browsing internet. After the first crash, i have to do several reboots etc to have my pc running again normally.

i think its motherboards problem. Or its a faulty psu?

Sorry for bad english,

 

[cin19]

When i powered up the pc after that the adaptor melt, (but everything else was fine)

I guess that is the problem, because that may or may not kill other components, like from MB, GPU, cpu, etc. You are better to check the components one by one, start from the MB. Or you need go to local PC shop ask for help. Or if you have other compatible PC, then test the part one by one. Nobody will know which one has problem, sorry.