Hello , so I encountered issues on my monitor. My monitor is a Samsung syncmaster 733nw, btw. So a month ago, my monitor randomly went black for a few seconds, then went back to normal. It happened more than twice, then it started working normally until I plugged my phone in to transfer documents, and then my monitor went black again for a few seconds, and it is now working normally again. I guess this rarely happens. I hope this is not a PSU or GPU issue. I know for a fact that this monitor is ancient and was only given to me. I am planning to replace it once I have enough money for a monitor since it has lines on it. Thank you for your answers.