I recently purchased a 2tb Samsung 970 Evo Plus M.2 NVMe SSD to add to my system along with a 860 Evo SSD and two other HDDs. The motherboard is a MSI B450 Gaming Pro Carbon AC and the M.2 is able to be recognized in the BIOS and I can boot to it, if it is the only drive plugged in. Whenever I plug in any or all my other drives, I am unable to POST and even access the BIOS. I am aware that some SATA ports get disabled, in my case ports 5 and 6, so I have my drives currently in SATA2, SATA3, and SATA4.
So far I have tried upgrading the BIOS, reset the CMOS to get the motherboard to default settings, tried each drive individually, deleted all data on one drive and unallocated it to see if a nonformatted drive would work with the M.2, tried putting the M.2 in M2_1 and M2_2, made sure the firmware on the Samsung SSDs are up to date, I've even replaced the M.2 with a new one. So far nothing works, and it won't POST. I can POST and boot if I have either only the M.2 plugged in, or if my drives are connected and the M.2 is not plugged in. I have been trying to troubleshoot this for a few hours and just beating my head against a wall it seems, so any help would be much appreciated. Thanks.
So far I have tried upgrading the BIOS, reset the CMOS to get the motherboard to default settings, tried each drive individually, deleted all data on one drive and unallocated it to see if a nonformatted drive would work with the M.2, tried putting the M.2 in M2_1 and M2_2, made sure the firmware on the Samsung SSDs are up to date, I've even replaced the M.2 with a new one. So far nothing works, and it won't POST. I can POST and boot if I have either only the M.2 plugged in, or if my drives are connected and the M.2 is not plugged in. I have been trying to troubleshoot this for a few hours and just beating my head against a wall it seems, so any help would be much appreciated. Thanks.