what is the actual reason why do CPUs wont start. Good monitor and its cable... cpu dont display CMOS startup?

Question

The Processor overheating.. Is it possible that sometimes it was a result of compatibility of power supply. It was a second power supply. It was used for almost 6 monsths....

Answer 1

There are many probable causes:

!. Yes, the power supply may be the problem, the power connectors from the supply to the motherboard may have loosened a bit or damaged. A poor connection between the headers and the plug may burn the header connectors over time. I have experienced it before. An irregular supply between the wires may cause system hangup (under or overvoltage supplies, remember, digital circuits need 5V or 12V with a 12% tolerance). Frequent cooling down produces what we call "thermal runaway", when a component frequently heats and cools down, connectors become "loose" and continuity or contacts slowly separate resulting in poor contact.

2. CMOS SETUP. You may have dead backup cells on the motherboard resulting in corrupted settings. You may need to replace the CMOS backup cell.

3. Check for proper mating or connection between the signal cable and the video card connector.

4. Check your video card and have it tested to another good PC. This may also be the culprit.

5. Did you test your monitor to another PC again?

Answer 2

It could be a couple things, maybe you need an extra cooling fan for the system, and if you don't have a good surge protector any power surge can take out the power supply. a lot depends on the system itself and without more specifics there is no way to know for sure.

Answer 3

There are so many variables involved in a non-starting computer...
You would need to provide more details to receive an appropriate answer, rather than speculation and opinion.
It is like asking "what is wrong with my car?"

Answer 4

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