There is no signal input to the display after powering on?????????

1) The BIOS of the award is set to:

2 Short: The system starts normally.

2 Short: The CMOS setting is incorrect, and you need to reset it.

2) The BIOS of the AMI is set to:

2 Short: The memory ECC verification error is incorrect.

3) Compatible with BIOS alarm tone**.

2. Short: The system power-on self-test (POST) failed.

Key suspicions:1The power of the power supply is insufficient {whether the power supply is enough for 300W, see how much W is marked on the label with +5V}2There is a compatibility problem with the memory {only plug in one to try, conditionally replace the brand-name genuine memory test}3

There is a problem with the graphics card {pay attention to the driver of the graphics card to try to change the version, it is best to change the graphics card and try again, the motherboard of NF2 has the phenomenon of insufficient AGP power supply, you can consider adding AGP power supply appropriately in the BIOS}

4.The hard disk has bad sectors {this possibility is small, and the general installation system will not be able to continue} long-term overclocking and serious electronic migration of the silicon chip {the u of the Barton kernel has this phenomenon, it is estimated that yours is not this problem}

6.The power supply circuit of the motherboard is unstable {check whether the capacitor is bulging}

You can plug the memory back in and see if there is an alarm sound, it is usually caused by hardware, and it has little to do with the system.

If it shows no signal input,It should be a problem with the host.,Maybe there's a problem with the power supply.,Can't get in touch with the host.,If it's a display problem.,It's impossible for you to see the word without signal input.。

It's better not to mess around with the brand machine yourself, and it's better to find a dealer to deal with it.

No input solution for the computer boot display screen display: 1Check that the cable connecting the computer to the monitor is not loose.

2.Open the main cover, check the motherboard, graphics card, and power supply for any abnormalities or odors, and check whether the memory module, graphics card, hard disk cable, and CPU heatsink are loose.

3) Unplug the graphics card and memory stick, find a clean cloth and an eraser, a little alcohol, use the eraser to oxidize the gold finger of the graphics card and memory stick, use the eraser to erase it again, pay attention to the strength, and then wipe it with a cloth with alcohol.

4) Clear the dust, memory modules and graphics card slots in the case, motherboard and CPU heatsink, and pay attention to the need to use a soft brush to clean it, don't fall into it!

5) Clean up the dust of the CPU cooling fan, if there is a condition, it is recommended to replace the CPU silicone, but you must be careful when disassembling the CPU fan, you must not pull it hard, Intel's original rotating buckle is gently pulled up, and other heat sinks refer to the manual;

Complete the above steps, install all the accessories, check if the installation is in place, and then turn on the test! Generally, the probability of memory modules is large, so you can focus on checking the memory modules first! If it can't be solved, it may be a hardware problem, and you can only go to an after-sales or repair shop!