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We would suspect a hardware failure ,since the system is not coming up to the Dell logo not coming up .Kindly check if there are any beeping noise that comes up .
Kindly private message the service tag and email address.
No beeps. Not a single one. The click comes from the far side of the hard drive, but the hard drive works fine when put in a different laptop. I have moved around and rearranged the memory modules with no change. Cleaned out the fan and the rest of the laptop, no change in the laptop. The laptop is out of warranty and is a 15R-5521.
You may want to try a new OEM Dell AC adapter (or stop by a shop that will let you test one) but the click sound is likely a sign of a faulty mainboard). Unfortunately on this system, replacing that meas replacing the CPU as well (the CPU is soldered to the mainboard) -- you're looking at between $150 for a board with a Celeron CPU to around $300 for one with an i7 CPU, and that's just the part - not the labor to have it installed.