Nitro 5 shows ‘no bootable device’ MANY TIMES

It appears that sometimes when I turn on the laptop the screen shows ‘not bootable device’, but with a few trials I was able to restart the computer and get it working again by unplugging everything(including power cable) then leave it shut for about 30 mins. Sometimes blue screen shows up while I was using the computer says it will restart the laptop, which then turns into the ‘no bootable device’ screen again. This has been happening a couple times already and I don’t know why it keeps on switching between being broken and functioning normally. Also I bought the labtop back in September. Series: AN515-44-R9TP

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AnhEZ28

@Willw try to reset BIOS setting. The SSD might be just loose or faulty. If you have done some basic troubleshooting but didn't help. You might need to contact Acer or the place you bought for the warranty.