Question Multiple problems with 3-year old rig ?

[Mechanical Engineer]

3 yr old Rig won't beep, post, case power button doesn't light up and only turns PC on but not off, reset switch on case and motherboard don't work, while all the fans and RGB lights work fine.​

System Hardware

Gigabyte X399 DESIGNARE EX, Threadripper x2950, Noctua NH-U12A, Premium CPU Cooler, 4 sticks of 16Gb Vengeance 3200Mhz DDR4, EVGA 1000 and 1300 PSU's, Adata 2Tb NVIE m.2 SSD, Fanxiang S101 1TB SSD SATA III, Timetec 512GB SSD 3D NAND TLC SATA III, 2 x Gigabyte RTX2080TI NVLink, Thermaltake View 71 Gaming Full Tower Computer Case, Seiki 39" 4K display, Samsung 8K 75" QLED display

Issues

• reset button on case and MB don't work
• Power Button on case not lighting up
• Power Button on case and motherboard only turns on PC but not off
• No beeps
• No post
• no signal out

Tests Done So Far

• CMOS cleared multiple times
• swapped PSU's
• Swapped GPU's
• Swapped displays
• Swapped video cables
• pulled out all 4 sticks of DDR4 and no error beep upon startup

 

[COLGeek]

Do you have any LEDs lit on the motherboard? Any fans turning when you power on?

 

[Mechanical Engineer]

Do you have any LEDs lit on the motherboard? Any fans turning when you power on?

Fans all work and several lights on the MB light up including DB_PORT that displays code for trouble shooting that reads 88. Just looked up
the code telling you the BIOS is wrong or a busted motherboard.

>Tests Done So Far

The only things missing would be "run open bench" and "swap motherboard".

X399 boards aren't cheap, even used ones on eBay. But that's par for Threadripper territory. If you don't want to spend money, the obvious workaround is to use it as-is, and use the outlet's rocker switch for on/off switch.

You were right bout the motherboard prices.

 

[COLGeek]

Unfortunately, it would appear your motherboard is kaput. Do you want to look for a replacement motherboard or bite the bullet to update your rig?

If I may ask, what do you do with this system? Gaming?