Question MOBO refuses to connect to monitors directly or through GPU's

[Speedwagon1934]

Relevant specs:

Base GPU: MSI NVIDIA GTX 1660 Ti Ventus XS 6G OC
Base Motherboard: MSI B450 Tomahawk

Additional base specs:

CPU: AMD Ryzen 5 2600 3.4 GHz 6-Core Processor
RAM: Corsair Vengeance LPX 16 GB (2 x 8 GB) DDR4-3000 CL15 Memory
Storage: Western Digital Blue 500 GB M.2-2280 SATA Solid State Drive
PSU EVGA 650 BQ 650 W 80+ Bronze Certified Semi-modular ATX Power Supply
Cooler: AMD Wraith Stealth AM4 CPU Cooler
Case: Cougar MX330 ATX Mid Tower Case

(Possibly all 6 years old or more?)


All I did for this one was take the cooler out to replace the dried thermal paste on the CPU and didn't touch anything else besides lightly dusting it with my air gun.

I booted it back up to test it and now everything turns on but neither the MOBO or GPU will connect to any monitor. The VGA light is on though but everything was working perfectly fine before this with performance testing and several boots. Even with the GPU removed and additional CPU/RAM tested the light persists along with the lack of any display.


I already reset the CMOS & tried replacing its battery, used multiple monitors and HDMI cords, swapped all the cords two times, used a spare and moved the GPU to another slot too. The GPU and other components run fine on any other MOBO I tested them on and the spare itself is functional giving the same results on the effected MOBO.


I have exhausted a full week traveling to other techs in my network and searching the internet asking for answers on this just to find others with the same unsolved issue with this B450 MOBO in particular and one other that is irrelevant that shared this issue.

It remains a mystery on what is particularly causing this issue and I have no explanation for the customer on how it even occurred in the first place.

 

[Lutfij]

Welcome to the forums, newcomer!

Relevant specs:
Base GPU: MSI NVIDIA GTX 1660 Ti Ventus XS 6G OC
Base Motherboard: MSI B450 Tomahawk
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

If your processor is not an APU, then you won't get display out from your motherboard as the Ryzen processors(not the APU's) lacked an iGPU.

Base Motherboard: MSI B450 Tomahawk

View: https://www.youtube.com/watch?v=ArPoRPecZ_s

Try and reflash the BIOS on your motherboard using the above link, with the latest BIOS version and see if that revives the platform.

 

[steveb1976]

im guessing you tried the usual solutions.. like. taking out cpu.. reseating it.. clearing cmos (wait a few minutes to see if it sorts the issue...
also use the dust blower on the gpu/pcie slot.,, incase you got dust in their and its blocking connectors. also check in their with a torch make sure the connectors look ok, and not damaged.

also have you put card back in.. and then tried "onboard/internal" gpu to see if you can get into windows and see if your gpu card detects in "device manager"

 

[Speedwagon1934]

Welcome to the forums, newcomer!

Relevant specs:
Base GPU: MSI NVIDIA GTX 1660 Ti Ventus XS 6G OC
Base Motherboard: MSI B450 Tomahawk
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model.

If your processor is not an APU, then you won't get display out from your motherboard as the Ryzen processors(not the APU's) lacked an iGPU.

Base Motherboard: MSI B450 Tomahawk

View: https://www.youtube.com/watch?v=ArPoRPecZ_s

Try and reflash the BIOS on your motherboard using the above link, with the latest BIOS version and see if that revives the platform.

I apologize about the lack of specs before, I decided to attempt to reflash the mobo but the process went differently for me.

https://ibb.co/DWxCmQ1

The red BIOS light flashed a couple times and then went solid and has been that way for a couple hours unlike what it is suppose to do. I understand this process can brick the MOBO powering it off the wrong way so I have left it on but I cant find an answer for that one along with many other people its seems.

 

[Speedwagon1934]

im guessing you tried the usual solutions.. like. taking out cpu.. reseating it.. clearing cmos (wait a few minutes to see if it sorts the issue...
also use the dust blower on the gpu/pcie slot.,, incase you got dust in their and its blocking connectors. also check in their with a torch make sure the connectors look ok, and not damaged.

also have you put card back in.. and then tried "onboard/internal" gpu to see if you can get into windows and see if your gpu card detects in "device manager"

I gave it a deluxe cleaning the second time I took it apart, went over the components with my scope too and they all appear to be in good condition.

I put a CPU with integrated graphics in and even a spare GPU and nothing would display on a monitor at all while it is on the effected MOBO too, hope the reflash ends up working.

 

[steveb1976]

when you did the bios flash... did you do the following

1)format 8gb usb(upto 32gb) to "fat32"
2)when you unzipped the downloaded file did you change the file name to "msi.rom" (you would need to turn on "extensions" (in folder section). so that you definately change the file to "msi.rom" and not "msi.rom.XXX" as this will fail.

try again and if its still same as last time. you can try different usb stick..
or turn pc off and then turn it on. and wait.. the leds may go red,or yellow or green a few times.. and reboot a few times this will be the bios re-training the memory and post checking..