PC won’t post

[TK Ruined]

I have always had a problem where sometimes my pc wouldn’t post and I had to reset it and try again, but I always thought my monitor was just acting up, but apparently that is not the case. 
 

This morning i had to reboot my pc about 5 times to get it to post and then later when I went to get back on, it wouldn’t post. I tried probably 25 times. I have tried different graphics cards, different RAM, 1 stick of RAM, 2 sticks, and 4 sticks.
 

I also made sure it wasn’t just my monitor by testing both DP and HDMI on 2 monitors and a TV.

 

My thoughts are that it’s the motherboard, but I don’t know all that much about PCs, and I need help so don’t end up wasting money on the wrong part.

[TK Ruined]

I have a RX 5700XT with Ryzen 5 3600, 16GB of RAM and a B450M Gaming motherboard

[III_ELITE_lll]

21 hours ago, TK Ruined said:

I have always had a problem where sometimes my pc wouldn’t post and I had to reset it and try again, but I always thought my monitor was just acting up, but apparently that is not the case. 
 

This morning i had to reboot my pc about 5 times to get it to post and then later when I went to get back on, it wouldn’t post. I tried probably 25 times. I have tried different graphics cards, different RAM, 1 stick of RAM, 2 sticks, and 4 sticks.
 

I also made sure it wasn’t just my monitor by testing both DP and HDMI on 2 monitors and a TV.

 

My thoughts are that it’s the motherboard, but I don’t know all that much about PCs, and I need help so don’t end up wasting money on the wrong part.

Have you updated your drivers? It could be your motherboard bios. It could also be your graphics card not functioning correctly. Maybe you will have to flash the bios on your motherboard. Could you tell me how long you’ve had this system and if it custom or pre-built?