Kostas98

You probably thing that PSU has an issue. Namely, what is the problem in which PSU may be a crucial factor that my computer turns on but displays nothing? I can't understand why my computer works fine when i rechange my ram in different slot....

I reset CMOS by replacing the motherboard's CMOS Battery, but still the issue is not solved. Probably my PSU has an issue? Thank you!

After searching, I thought to change the RAM in different memory slot ( Dual Channel DDR3) and my PC started normally and display as well. So, i restarted my pc after 10 minutes and all things did well. But when i shut down and i press the power button to turn on my pc did not start. So, i made the same thing and nothing changed.In other words, when i change the RAM in different memory slot my pc works and my monitor is working. Without changing it in another slot, when i restart it everything goes fine, but when i shut down and press the power button to turn on, my monitor does not work and the front fan too.... why?? there is no beep or motherboard LED's ! I built my PC in 2014CPU: Intel Pentium G3258 3.2 GhzPSU: Corsair VS Series 450 WATTMOTHERBOARD : Gigabyte GA-Z97M-D3HRAM: Corsair CMZ8GX3M2A1600C9 Vengeance 8GB ( 2x4GB) 1600 MHzSSHD: Seagate ST1000DX001 1TB 3.5 DESKTOPSSD: Samsung MZ-7TE120BW 840 EVOI do not have Graphic Card.PC is running Windows 10 Pro Version 1903When I change the ram I mean that i shut down PC and i unplug supply cable, all usb cables, LAN cable, and VGA cable. There is nothing connected to PC. Later, I press down the tabs at either end of the slots and i change the ram. For example by grey slot i install it to the one black slot. So when my computer turns on but Displays nothing i remove it from black slot to other grey slot. My Motherboard has 4 slots. ( black, grey, black, grey). In the end, I plug all cables and my PC and my monitor work fine.Another worth mentioning is that sometimes my PC does not get electric power and because of this, I press supply cables like checking that are connected to motherboard and after that gets electric power. Probably my PSU has an issue? But how then works?