I am inclined to believe it's the PSU, but the motherboard light stuck at CPU debug is also fishy.
Try a different PSU first. May be it's PSU's power delivery to the CPU.
okay, looks like i5-12400 (latest) is available for Rs. 19K on PrimeABGB. Buy Online Intel Core i5-12400 12th Gen Alder Lake Processor - in India
Just order it with a H610 motherboard right away. ']Buy Online Motherboards In India At Best Price with Motherboard Chipset Intel H610
Note that...
Let's set aside Rs. 10K for RAM then.
What you can now buy is:
Intel i3-10105 @ 11.5K. Amazon.in: Buy Intel® Core™ i3-10105 10th Gen Generation Processor (6M Cache, up to 4.40 GHz) LGA 1200 UHD 630 Graphics 3 Years Warranty (No Graphic Card Required) Comes with Fan Online at Low Prices in...
i7 itself costs Rs. 40,000. Buy Online Intel Core i7-12700K 12th Gen Alder Lake Processor BX8071512700K - in India
32GB RAM will cost Rs. 10,000.
You might want to lower your expectations.
Looks good.
If you really want triple monitor without discrete GPU, then Dell Optiplex might have it. :p Might cost a bit extra. Edit: Nope, they are very expensive.
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