When the computer cannot boot, the hardware is the thing you need most concern, but to be able to find the right disease for the computer, you should follow the procedure below to avoid misdiagnosing the source of the attack. The following steps can be applied when the computer cannot boot, has strange noises, the screen does not turn up or does not start up but cannot enter Windows.
1. Check the power supply
Not only the computer but all electrical equipment when malfunctioning, the first thing you should do is check the power source, from the home power, the connector to the power cord of the machine. The easiest way is to use an electric tester to check if there is power.
Next, open the case and re-plug the wires from the source to the motherboard and other devices, then try to start up, if the lights are not on or the power fan is not spinning, the power supply may be damaged and need to be replaced. so. Usually the power supplies have fuses, so if you are lucky you just need to replace the fuse of the source, of course to replace the fuse for the source you also need a little experience using the torch because the fuse is soldered directly to the power board.
The best way is to bring the source to reputable locations for repair or, if possible, buy new sources to be sure.
2. Check the monitor and graphics card
After making sure the source is still working properly but when the screen is still not displayed, you need to check the monitor and the video card.
First is still the screen power cord (when there is electricity, the small LED in the corner of the screen will light) and then the cable connection, if possible borrow another screen to test to see if the screen is damaged. If that still doesn’t yield results then the graphics card should be considered. You can try a few ways like removing the card and then plugging it back in, switching to the integrated graphics chip (if the motherboard supports it) or replacing it with a different graphics card.
The damaged cable between the Video Card and the monitor is also the reason why the monitor cannot display the picture.
3. RAM error
After checking all the power and screen problems and still not finding the cause of the error, the next device you need to check is the machine’s memory.
RAM is also a common cause of computer malfunctions. Maybe the RAM socket is loose (the machine will beep short and repeat continuously or there is no beep when booting), just remove and re-plug (try to plug in another slot if still can’t fix), make sure to clean the RAM plug. Carefully reattach the RAM stick by pressing the ends of the RAM stick slowly down into the slot until the two snaps match. Note that RAM has only one way to plug, otherwise it cannot be plugged in.
If that still doesn’t work, you can try replacing each stick of RAM with another one that you are sure is still working well to see if the cause is RAM or not.
4. Hard Drive
If the BIOS screen still shows up at boot but just stops there and can’t get into Windows then it’s possible the problem is with the hard drive. When the machine just starts up, if you pay close attention, you will hear a small click (the sound of the reader moving to the highest position), otherwise you need to check the power supply for the HDD to make sure the hard drive is still working. If the hard drive still rotates but still cannot access Windows, this case may be caused by Virus affecting your file system, software problems please not discussed in this article. If the BIOS screen does not show up the hard drive name, the hard drive is damaged and needs replacing.
Of course, the tips to check whether the hard drive works or not only applies to conventional mechanical hard drives, not to SSDs because the SSD simply has no motor.
Through the above checks and still do not find the cause of the error, chances are your Main or Chip has a problem. The chances of the Main failing to fail are usually higher because the CPU rarely fails (unless you overclock regularly), so if possible you can replace another CPU to try. However, the best advice for you if you intend to replace the motherboard is to replace the new tree if your system is “old” because old components are still difficult to be compatible with the new motherboard and the cost for the old one. The low speed is no less than the new one with much higher speeds.
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