I recently ran into a problem with my dell pc. I had an amber light so I replaced the psu. I bought a cx 500 and installed it. It's fine for one whole day then it freezes so I reboot it and I get to windows and pc freezes I reboot again and bam no display devices found on the pc LCD small screen. I buy a motherboard and replace it and I'm still getting that issue. I unplugged the ram and a ram error came up so I put it back in. Second I unplugged the PCI from the graphics card and it makes a beeping noise. If I remove the Hdd the the LCD screen on the pc will say one or more at a devices issue. I don't know what else to replace. I tried everything. The pc light is blue, but won't let me see the screen and before this issue happened the psu was near silent now one of the fans is making noise.