Razer Blade Advanced 2018 - Intermittent black screen and BSOD

Hi there, My brother's laptop has been experiencing an issue where it blue/black screens after being used for a short period of time. I tried to contact support through the standard portal at https://support.razer.com/warranty-support/ but the laptop is out of warranty and I was offered no other way to contact support other than posting on the forums. I have updated all the software drivers and the BIOS on the laptop and reinstalled Windows 10 twice (clean install). I have Synapse 3 installed. I thought the issue could have been some kind of board torquing around the CPU. So, knowing it was out of warranty, I partially disassembled it and cleaned out a TON of dust from the fan track. After careful reassembly where I was sure to tighten the heatsink screws evenly and not too tightly, the laptop seemed OK for a few hours, but shortly after it began to blue/black screen again. Another issue that led me to suspect something relating to the fan is that when the laptop does work, the fan is almost always at 100% speed even if the system is idling. I realize that this could be due to many different faulty components. The laptop has been dropped at least once and has a noticeable dent on one of its corners; it's severe enough that the screw standoff on that corner is loose from the case. Is this an issue that has been reported elsewhere? Is there any way that I could get in contact with a support member about this? I realize this would not be a repair covered by a warranty, but if the repair is cheaper than a new laptop, I would prefer the repair option. I have proof of purchase of the laptop. Thanks.