i have replaced the sata cord from hard drive to the mother board mother board light is solid green also but still has a black screen on the monitor the monitor is fine been tested everything been checked but the hard drive has not been replaced the post code numbers 123 light up solid green also power button lights up solid green but number 4 does not light up it is a Dell Dimension 5150/E510
i have replaced the sata cord from hard drive to the mother board mother board light is solid green also but still has a black screen on the monitor the monitor is fine been tested everything been checked but the hard drive has not been replaced the post code numbers 123 light up solid green also power button lights up solid green but number 4 does not light up it is a Dell Dimension 5150/E510