Computer blinking 3 time long 5 short

@tiahanuman that blink code is fairly generic but commonly indicates that you are having issues with either the CPU or the motherboard. It is also possible that this is a BIOS issue. Try a hard reset first
Power off your laptop.

• Remove the A/C adapter, disconnect the main battery and everything else that is attached to your laptop,
• Hold the 'POWER' button down on your laptop for about 10 seconds.
• Plug in the A/C adapter only and try to power on.

If that did not work you may have to attempt to recover your BIOS:

• Turn off the laptop.
• Press and hold Windows Key + B (or V on some models) simultaneously.
• While holding those keys, press and hold the Power button for 3 to 5 seconds, then release the power button while continuing to hold the Windows/B keys until a BIOS update screen appears

as always, you also want to check your RAM sticks. So remove the RAM, clean the contacts with a pencil eraser. Do it gentle so as to not destroy the module. Replace it and restart. If you have more than one module, remove it and just leave one connected.

To work on your computer, use the guides from here HP 14-cf2112wm