TheGameqt

While many companies make the physical board and DIMMs for memory, 90% of DRAM chips in the world can only be one of 3 companies, Samsung, SK Hynix or Micron Technologies.  Chip wise, you should be safe either way.

B450 is more than enough really! MSI has good ones. B550 will also come out sooner than later at this point which might be worth checking out.
 
I suggest you to check the frequency in the BIOS right after you install it the first time.
 
The RAM should run at the max "stock" frequency your CPU supports. In case of 1st gen Ryzen, that should be 2133/2400Mhz. If you enable XMP/DOCP profiles memory will try go higher than that, but probably will fail unless you start tweaking voltages etc. If it fails, screen usually go black, reboot several times, and then forces you to BIOS while also disabling the DOCP profile and restoring the stock settings. But this behaviour may depend on the motherboard.

Ram pretty much ALWAYS work in any case, but not at it's full speed.
Especially for 1st gen Ryzen, it's very very unlikely to work past 2400/2666Mhz, whatever you do. It's a pain to go over it.
Even if the vendor is "unknown", there aren't many manifacturers. What you probably mean is that it doesn't have a recognizable external branding, but the ram chip on the module shouldn't cause any problem.
With new Ryzen you're more likely to work with 3200Mhz without big hassle.
 
PS: If  you upgrade to the 3700X, check if your motherboard support it.. A320 motherboards aren't really good, expecially with that power hungry chips.

Thanks, going to try the malware removal tool. 
 
Will do this too, hopefully this wil do the trick.^^