The cost to repair is usually more than a new laptop today (at least here.)
Especially if you look at the refurb market like https://computers.woot.com/offers/dell-latitude-3560-notebook?ref=w_cnt_lnd_cat_pc_2_19 which is 360USD.
The failure you wrote of is common when the mainboard fails. Ask HCL how much to repair so you know if it's worth it.
Hello, I am using a HCL me series laptop for a few years. just recently the laptop wouldnt turn on. When connected to power source and turned on, the green light indicating power comes on, a click sound comes and goes off again. nothing appears in the screen. i cleaned the ram and put it back, no result. i changed the CMOS battery and the laptop started well 3 times and on the fourth try it has gone back to its problematic state. Do post your valuable suggestions. i also tried connecting to a external Display. nothing happens in it also.

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