4 Steps to Fix a RAM Upgrade Boot Loop
Reseat the RAM Push firmly until both clips click. Loose sticks are the most common cause of boot loops after an upgrade.
Check your motherboard’s QVL Not all RAM kits are compatible with every board. If your specific model isn’t on the qualified vendor list, that is likely the problem.
Try one stick at a time in the A2 slot Install a single stick in the second slot from the CPU. If it boots, the other stick may be defective or the kit needs a different slot configuration.
Clear the CMOS Remove the motherboard battery for 30 seconds to reset memory training. This often resolves stubborn boot loops.