So i’m new and I just built my pc and its boots up and everything but every few minutes or so it loses HDMI signal. I noticed that the CPU and VGA Red LED lights turn on and off when it happens. I have switched the HDMI cords as well as trying the pc on my TV. Same thing happened. I also reseated the GPU. Can someone suggest how to fix it?

GPU: MSI Gaming X Nvidia Geforce GTX 1660 Super

Mobo: MSI B450 Tomahawk Max