my monitor wont open when i open my pc

jou1993

Prominent
Jan 20, 2018
2
0
510
so i bought Sapphire Radeon PULSE RX 550 4GB GDDR5 HDMI graphic card for my pc after working normal for about 2 months suddenly my screen would turn black without reason then turn on again with different resolution or with the same .At first i thought it was because of a cable i checked an cables were fine ,then i tried to unnistall some drivers and then install them again .Now
i won't open the monitor at all .i placed the my old graphic card again and the monitor open normally ,i put the radeon gpu and let my case open and then pressed the on button for my pc to start ,what i saw was that gpu fans start to spin but after a half minute delay or something the stopped ,i think it is a hardware problem but from the other hand i didn't lay a hand inside my pc ,second thought is compatibility problem but again my pc run normal for 2 months why now here is my part list

cpu :AMD - FX-8350 4.0GHz 8-Core Processor
motherboard : Asus - M5A97 ATX AM3+ Motherboard
Storage :Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
gpu : Sapphire Radeon PULSE RX 550 4GB GDDR5 HDMI
psu : i dont know the model but its 450 W
memory : i dont niether but i have 8 gb

does anyone had similar problem ? or know somethig to do about ?
 

jou1993

Prominent
Jan 20, 2018
2
0
510


just like this ? there must be a root to the problem

 
Poorly made units often die in 1-2 months of use. With higher level GPU the PSU could matter, but your GPU uses no external power from PSU. So yes, it was just like this - but you did had a forewarning that something is going wrong with the card.