Omen 17 won’t boot up, even after trying some things I seen in some forums on this hp support websit

[aProsperTurtle]

After accidentally  leaving my laptop omen 17 unplugged and closed the battery died during the time it took me (a couple days) to go to use my laptop again. Upon trying to turn it on, I discovered the battery had in fact died at some point. 

After discovering the battery had died I did what anyone would do and plugged it in, the charger port light lit an orange signifying that it was in fact charging. After that I tried turning it on again with the charger cord was plugged back in to discover once again it was not booting up. 
I then went online to the forums to help resolve my laptop booting problems. After looking through several different threads I discovered I was not the only one having this problem, and here is where the problem resides.
The following are some steps I have went through and some descriptions that I hope resolve my issue.

As are as follows... 

I have tried to remove the battery, after removing the battery I then held the power button down to deplete any remaining electricity. 
I then tried to turn it on after that and the laptop did not boot up. 
It did however turn the power button on and I realized that the caps button was flashing, 3 “long” blinks and 2 “short” blinks. The fans also are running while the caps lock is blinking. 
I am not sure what to do at this point and am reaching out.

I have tried booting it with out the battery plugged in with no avail. I have also tried to boot it using only the battery power, also with no progress in resolution. 

Hopefully I have given enough information to start the process of resolving my issue with my laptop, thank you greatly in advance. Looking forward to your response. 

[WAWood]

@aProsperTurtle 

Software failures will generate on-screen messages, usually about not finding an Operating System or not being able to boot. When the screen is blank, the PC is experiencing a major hardware failure.
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If the CapsLock key is blinking or there is beeping, read this HP information on the likely cause of the hardware failure based on the blinking or beeping patters.

For laptops, this HP thread describes the different blink and beep codes: https://support.hp.com/us-en/document/c01732674?jumpid=reg_r1002_usen_c-001_title_r0001
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To determine the cause with hardware failures, you have to be able run diagnostics. We have no way of accessing your PC from here, so we can not do that for you. You have to do it yourself.

You do this by pressing the Esc key repeatedly when rebooting and then, when the HP Startup Menu appears, selecting Diagnostics (usually F2) and letting it run.

If it is NOT possible to run diagnostics, or if that does not work, then there is NOTHING more you can do by yourself -- and there is NOTHING we can do because we have no way of accessing your PC from here to run diagnostics or repair hardware.

You will need to have the PC physically examined in a service facility by folks that can run their own diagnostics to determine what is wrong with it.

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If your PC is still under the original one-year HP warranty, or if you have purchased an extended warranty from HP and this is still valid, then having HP do this is an inexpensive option for you. In that case, you should contact HP Customer Support to see about having it repaired or replaced under warranty.

To contact HP Support see the following link to create yourself a case number, then call and it may help speed up the call process:

Step 1. Here is the link: https://support.hp.com/us-en/contact-hp
Step 2. Enter Product number or select to auto detect
Step 3. Scroll down to "Still need help? Complete the form to select your contact options"
Step 4. Scroll down and click on: HP contact options - click on Get phone number

Case number and phone number appear.
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If your PC is no longer under warranty, then it will cost you up front to have HP examine your PC. If you want to do that, you will have to contact an HP Repair or Service Center to see if they can examine the PC to determine the cause(s) of the problems, if it can be repaired, and an estimate of the repair costs.

Since you live in the U.S., here is a link to the HP Service Repair Centers:
https://www.service-center-locator.com/hp-hewlett-packard/hp-hewlett-packard-service-center.htm

If that link does not get you a useful page, then use the main HP link:
http://www8.hp.com/us/en/contact-hp/ww-contact-us.html

Good Luck