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Hi all from Kharkiv, Ukraine! 🙂 

I have HP EliteDesk 800 G4 SFF (full specs i7 8700/8GB DDR4/256GB m.2 SSD, product # 4DP06UT#ABA, serial # [Personal Information Removed]). Now when I try power on PC I hear sound and see light/LED errors with 2 long + 4 short beeps (same as red + white blinking). 

I try find problem - HP sites says, that it BIOS/SureStart issue. HP problem.jpg

I try make 2 steps:

1. I remove and replace new one CMOS battery

2. I push Clear CMOS button on MB

It's pity, but nothing works. :(((( I still have these 2 long + 4 short beeps...... :((((

Please, help me fix it.  Because I need to work on my PC. 😞 Thanks!

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