Biostar TB250 motherboard or CPU dies after 4 months

[deskless]

All of a sudden mining stopped. Not sure whether the MB or CPU died. When I opened the rig I did see lot of dust. I plan to clean it this week and try running them again. Have any of you tried to call warranty on either the MB or CPU ?

[deskless]

I tested PSU and it is fine. I tried to run without GPUs and the motherboard wouldn't start. I saw lot of dust in CPU heatsink and thatswhy suspecting something happened to it or the MB. I will clean and try again. Thanks for responding.