Seen this problem so many times with AMD CPU.s first download the latest bios for your motherboard if you don,t no how to do this glad to help second once have udated your bios get the latest amd chipset drivers from the amd website
And as for you fast boot problem all you need to do remove the side your case some motherboards have button to reset the bios other don't if it the later then all you need to do is unplug the pc from the power supply make sure you touch the case before you touch anything inside your pc get a...
First thing I would do is check your system temps https://www.cpuid.com/softwares/cpu-z.html
with this app write them down .it it crashes in this test then you might need to replace your thermal paste .then repeat checking your CPU and GPU temps next if this fails see if there is a bios update...
