Unplugged my SeaGate external hard drive & now my computer won't POST.... Already checked boot o...

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Unplugged my SeaGate external hard drive & now my computer won't POST.... Already checked boot order. Any ideas?

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Troubleshooting

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Troubleshooting Help:

*What is your parts list? *

PCPartPicker part list / Price breakdown by merchant

Type	Item	Price
CPU	AMD - Ryzen 5 2400G 3.6 GHz Quad-Core Processor	$159.89 @ OutletPC
Motherboard	MSI - B450M MORTAR Micro ATX AM4 Motherboard	-
Memory	Team - Vulcan 16 GB (2 x 8 GB) DDR4-3000 Memory	$109.99 @ Newegg
Storage	Samsung - 860 Evo 500 GB 2.5" Solid State Drive	$82.99 @ Amazon
Case	Rosewill - MAGNETAR ATX Mid Tower Case	-
Power Supply	Corsair - CXM (2015) 450 W 80 Bronze Certified Semi-Modular ATX Power Supply	$49.89 @ OutletPC
Case Fan	Fractal Design - X2 GP-12 (Black) 52.3 CFM 120mm Fan	$11.89 @ OutletPC
Case Fan	Fractal Design - X2 GP-12 (Black) 52.3 CFM 120mm Fan	$11.89 @ OutletPC
Other	Bluetooth 4.0 Adapter	$8.98
	Prices include shipping, taxes, rebates, and discounts
	Total (before mail-in rebates)	$455.52
	Mail-in rebates	-$20.00
	Total	$435.52
	Generated by PCPartPicker 2019-01-13 16:05 EST-0500

Describe your problem. List any error messages and symptoms. Be descriptive.

I unplugged my external hard drive to move it to another computer. As soon as I unplugged it, my monitor went blank. Now, when I go to power my computer on, it will display the Arsenal Gaming graphic, then just go to a blank, black screen.

List anything you've done in attempt to diagnose or fix the problem.

I tried plugging it back in to check if it would start with it plugged in-no dice.

I've checked the boot order in the BIOS & my internal SSD is listed first, as it should be.

I'm really not sure what else to do, I figured it was a boot order issue. It worked just fine for months, I've had it built for a while now & this is the first issue, so there's nothing incorrectly connected as far as I know.

Provide any additional details you wish below.

This is the hard drive in question: https://www.amazon.com/Seagate-External-Desktop-Photography-STEL6000100/dp/B01K4241D0

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Posted: 5 years ago
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