Question PC not booting after dusting off, red light on motherboard

[JoyousAxle]

Recently i thought I would dust off my PC, and I used a hair dryer(set to room temperature) to do it. Got a rid of a ton of dust, but now it won't boot up. Power's on but no signal to screen, and a solid red light is shining on the motherboard. Realized after googling that hair dryer probably wasn't the greatest of ideas. I assume some part of the hardware is damaged, so does anyone have any ideas of what to look at/how to troubleshoot this?

Motherboard: ASUS Z97-AR - Black, Socket-1150
Power Supply: Cooler Master G750M, 750W PSU
CPU: Intel Core i5-4690K
Graphics Card: ASUS GeForce BLACK GTX 970 4GB
RAM: HyperX Fury DDR3 1866MHz 16GB Black

 

[galaxymark1994]

Using a hairdryer as a dust remover on PC is always not recommended.
But if it's not set to "HOT" mode, that should be good. I'm sure you also have multiple Fans on your PC that may spin when you're blowing the Hairdryer, It might build-up ElectroStatic that may damage your PC Parts. I would suggest checking your motherboard's manual for that Error Light(the red light you mention on the motherboard) so you can start troubleshooting from there.

 

[JoyousAxle]

Thanks for the help! It was the DRAM LED light which was shining, apparently indicating faulty memory, so I unplugged on of the RAM units and reseated it properly, and now it boots up. Still makes a whole lot of noise, but I'll have to look into that in the future.

 

[Shjacks55]

Worst was in a bank. Opened computer case and pulled out 2 foot by 2 foot by 4 inch "dust bunny" hunk of dustball. If you are in a humid area, gold plated contacts in contact with tin contacts creates a white insulating "rust" that is resolved by reseating the chips.