HP OfficeJet 3830 printer power light blinking, console display froze on HP logo and loading bar

[Shawn11]

Hi there, my officejet 3830 is stuck trying to turn on. It has the power light flashing and the display is frozen with the loading bar below it. Please help!

[Riddle_Decipher]

@Shawn11 Let's start with performing a Hard Reset: 

• With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet.
• Remove USB cable, if present.
• Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge.
• Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer.
• Turn on the printer and wait till warm-up period finishes and the printer is idle.

Perform Firmware Update: Follow steps from the link: Click here for steps.

P.S: Welcome to HP Community 😉

Let me know how that pans out,

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That said, I will have someone follow-up on this to ensure you've been helped,

Just in case you don't get back to us, 

have a good day, ahead.