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June 21st, 2024 08:44

No POST No BOOT Precision 5820

Hello, Recently my precision tower 5820 has decided it doesn't want to POST. One day i shut it down, when i went to power up again the fans rotate but when i hit the power button i get nothing. 

So here's what happens, When the initial power enters the machine from the main lug socket, the fans spin up then i get a 2-2 amber light on the power button with no repeats. 

What i have tried: Removing all peripherals including spare drives, gpu etc. Removed all ram slots to see if it registered another error again only a 2-2 amber with no repeat. Tried a new psu, reset the cmos, jumped the board. 

After every attempt at trouble shooting, I still get the 2-2 amber with no repeat pattern. If i hold the power button in for 10 seconds, the fans stop and restart and it shows the same 2-2 amber lights again with no repeat. 

My best guess is the motherboard is fried somehow? But before i buy a new one i suppose it's worth an attempt to see if anyone here can help? Please :)

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June 21st, 2024 11:13

If you are in US, replacement boards are starting from $40 on big auction site, while a complete system will start around $200 USD.

5 Practitioner

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5.5K Posts

June 21st, 2024 09:34

The error codes indicates motherboard BIOS ROM failure and the system is in recovery mode.  Suggest resolution is to flash the BIOS with the latest version.

This is the latest BIOS firmware for your 5820 system at this time https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=mxxnm&oscode=wt64a&productcode=precision-5820-workstation.  Use a USB stick formatted with FAT32 to flash outside of operating system, F12 at boot.

If one time boot menu is not accessible, hold Ctrl + Esc key to trigger BIOS recovery menu.  See how to recover the BIOS on a Dell computer https://www.dell.com/support/kbdoc/en-us/000132453/how-to-recover-the-bios-on-a-dell-computer-or-tablet

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June 21st, 2024 10:37

@Chino de Oro​ Thanks i appreciate the quick reply, although i have tried this and it did not work.

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June 21st, 2024 11:49

@Chino de Oro​ Thank you very much, although unfortunately I'm based in the UK. I appreciate your help with my question. At least now I can be certain that I need a new motherboard! :(

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