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Many boys have dreamed of assembling a computer on their own since childhood. Leaving aside confusion and preparation for choosing components, biggest obstacle should be that after installation there will be problems and they do not know how to solve them We often say that car does not light up.

Today, I will briefly talk about causes of lighting failures and solutions. In end, on my own, I set up a new machine from scratch and turned on new machine for first time. The moment fan turned on and power light came on, feeling of satisfaction was very unforgettable. .

What should I do if light does not come on after installing machine?

When you've finally finished assembling, press case's power button with full wait and imagine a scene where power light is on and fan is spinning. During this time, Don't panic or get annoyed, check one by one, Calm down and solve problem properly.

First: power problems

1. Power cord

Make sure power cord is firmly connected to motherboard, and there is no forgotten plug, most important thing is processor power supply (8/4 pins) and motherboard power supply (24 pins). If you buy a modular power supply, also check if wire is connected to power supply, because during installation process, power cord can be tightened and then loosened in various ways by you.

2. Power switch

The "-" switch behind power supply is on, and "o" switch is off, don't mix it up. After there are no problems with power, indicator light on motherboard should light up, which means power is on.

Second: heatsink installation problem

Neither too loose nor too tight when installing heatsink. The screws on buckle only need to be tightened.No miracles (this is also a point to pay attention to during entire installation process). If heatsink is pressed too tight, it will affect contact between CPU and motherboard, which will cause boot failure and certain motherboard damage after a long time.

Third: chassis problem

The most frustrating part of installation process is jumper on front of case. Check if jumper on front panel is inserted into corresponding pin by label on motherboard. If there is no problem with position, try using a screwdriver to short-circuit positive and negative poles of power-on pins, if it can catch fire, then there is a problem with jumper.

What if console is on but there is no signal on monitor?

Finally, computer started to idle, and when I saw light bulbs on case and motherboard, I felt a little relieved. After connecting monitor, I found that monitor was completely black (ten thousand grass mud horses were really running in my heart at this time), don't panic, follow me carefully to find out problem.

First: display issues

1. Make sure display and wires are in order

There is no signal on monitor. The first thing to check is a problem with monitor. If you have other computers or laptops at home, you can connect a monitor to see if it can display image normally.

2. Input source monitoring

A typical monitor can have four interfaces: VGA, DVI, HDMI, and DP. Make sure your monitor's input source is same. The input source can be set directly using buttons on monitor.

Second: graphics card issues

1. Make sure your graphics card is working

The display of monitor operation is carried out through video card, first of all it is necessary to determine whether video card is working normally. If processor has a primary display, you can disable graphics card, connect display cable to the motherboard first, and check if it can display normally.

2. Check if video card power cable is connected

If you are using a mid-to-high-end discrete graphics card, it must be powered separately. Make sure video card's power cable is connected, otherwise it will not display properly. Some low-end graphics cards don't require a separate power supply, so you don't have to worry about this problem.

Third: memory problem

Memory is also most common problem that won't light up. First, check if your memory is inserted all way. When installing memory, you still need to apply a little effort.

If memory still does not light up after memory is inserted, you can keep only one memory and replace each motherboard slot to check separately.

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Be brave and attentive during installation process, don't be afraid of problems, while you check in order, you can find problem.Many acquaintances who did not catch fire after installation found out that it was due to their carelessness , not a hardware problem.

PS: Try to choose products of big brands of first or second level. The quality check before leaving factory will include several inspections of machine. The likelihood of problems with product itself is low. Even if there is a problem, it can be solved after sale, so you need to buy products through serious channels, and not be greedy to smallest detail.