Zingel
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In this case, we need to figure out:
Does the computer boot? If it boots (the hard drive spins, the lights blink...), then the problem is most likely with the monitor. If it doesn't boot, does it make any sounds (beeps) when turned on? If it beeps, then either the memory, video card, or motherboard is not working. If it doesn't beep and loads the setup, then the problem is with loading the operating system. This is a hard drive issue. Perhaps the active disk partition has been changed, or there are bad sectors, or the files have been corrupted... There are many possibilities. But everything can be fixed, except for physical hardware failure, in which case only replacement is possible.
Does the computer boot? If it boots (the hard drive spins, the lights blink...), then the problem is most likely with the monitor. If it doesn't boot, does it make any sounds (beeps) when turned on? If it beeps, then either the memory, video card, or motherboard is not working. If it doesn't beep and loads the setup, then the problem is with loading the operating system. This is a hard drive issue. Perhaps the active disk partition has been changed, or there are bad sectors, or the files have been corrupted... There are many possibilities. But everything can be fixed, except for physical hardware failure, in which case only replacement is possible.
Герои - это клёво.