First PC won't boot

HarveyS · July 2, 2023

I've just started building my first PC. Everything has gone well, but it won't post. I'm using an Asrock B450M Pro4 Rev 2.0 motherboard, with an AMD Ryzen 5 5600G CPU. I plugged it into my TV ready to test it and i turned it on. The PSU fan and the CPU fan turn on, but nothing else happened. I mashed the BIOS key (F2) and nothing happened. I can't see any indication that it is working other than the fans spinning. I haven't updated the BIOS, however there is a sticker that has been put on to say that it is "AMD RYZEN 5000 DESKTOP READY". Everything else seems to be connected correctly. I am also using CPU's integrated graphics, with the HDMI plugged into the port on the motherboard. Occasionally the CPU fan will stop spinning for a couple seconds then start again along with the occasional click from the PSU. If it is the BIOS, how would i go about updating it without the interface or internet. If anybody could give some advice, that would be greatly appreciated.

Royal Chicken · July 2, 2023

If you have a friend with an older ryzen cpu, then ask if you can borrow their cpu to see if it works in that board. Or you might be able to take it to a computer parts store and they may be able to update your bios. Also before you do that, try reseating your power cable and if you have a gpu try putting that into the mobo and see if a display signal comes. Finally try connecting it to a monitor. It might have some trouble with your TV

cumali_032 · July 2, 2023

You need BIOS update. If you have older series CPU you can update, but you dont have go to computer store.

HarveyS · July 3, 2023

At first, I thought that it was a BIOS problem, however after further investigation, it seems that I already have BIOS P5.70, which should support the 5600G. I have reseated the RAM, CPU and power cables. I don't have a GPU, older CPU or an other motherboard. I still haven't fixed anything a day later. Any ideas?

cumali_032 · July 5, 2023

On 7/3/2023 at 4:54 PM, HarveyS said:

At first, I thought that it was a BIOS problem, however after further investigation, it seems that I already have BIOS P5.70, which should support the 5600G. I have reseated the RAM, CPU and power cables. I don't have a GPU, older CPU or an other motherboard. I still haven't fixed anything a day later. Any ideas?

Umm, are you sure? Did you install the latest bios?

Xiee · July 5, 2023

Try resetting your BIOS. There should be a pin you could short to reset the BIOS or just remove the CMOS battery and wait for 5 mins then try again.

As others have said, try borrowing a lower CPU (a Ryzen 3000 series) and then update the BIOS. I've experienced something like this before. The box said it should support said processors, but after I swapped it to a lower CPU and after a BIOS update, it only began to work.