Hi @elesmer ,
It seems as though the PC is not passing POST (Power On Self Test) with the G-Skill ram installed.
If you connect a pc [https://www.ebay.com.au/i/333447663020?chn=ps&norover=1&mkevt=1&mkrid=705-139619-5960-0&mkcid=2&itemid=333447663020&targetid=921460872233&device=c&mktype=pla&googleloc=1000676&poi=&campaignid=10101785225&mkgroupid=102311925020&rlsatarget=aud-693796249881:pla-921460872233&abcId=9300368&merchantid=7364522&gclid=EAIaIQobChMIy5fQr_yw7AIVmAVyCh2o7QiQEAQYASABEgIL8PD_BwE|system speaker - example only] to the speaker header pins on the motherboard, and if you reinstall the “faulty ram” you should get [https://www.asus.com/support/FAQ/1029959/|a one long, two short beeps error code] on startup, that will tell you that there is a problem with the memory.
Here’s the motherboard’s [https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/PRIME_B365M-A/E15045_PRIME_B365M-A_UM_web.pdf|user manual]. Go to p.1-1 &1-2 Item #9 for the speaker’s header pin location and connection details.
Here’s the motherboard’s [https://dlcdnets.asus.com/pub/ASUS/mb/LGA1151/PRIME_B365M-A/Memory_QVL.pdf|supported memory list] which shows what memory modules have been approved by the manufacturer and will work with the motherboard. These lists are never complete however but are a good starting point.
Also review p.1-8 in the manual regarding system memory about installing memory modules with the same CAS latency etc. Do the Corsair and the G-Skill have the same specifications?
It may be that the memory has just failed as mentioned above, but it pays to take notice of what the memory requirements are and also if it has been approved by the motherboard manufacturer as being suitable to be used.