Problems booting a laptop with XFCE

I have an Asus N71Jv laptop that needs to be restarted repeatedly before it works, but when I start it with the F2 key pressed, it works. I’ve installed new memory strips. The OS is Manjaro XFCE installed on SDA and is set to boot first. Once XFCE is running, it works flawlessly.
Can anyone help me?
Thanks in advance.

And what does F2 do on this machine? Skips the error about faulty memory or what? If it is this, you cannot do much except update the firmware and check the memory (and the timings and other parameters), although new, is compatible with that motherboard. And that you didn’t use 2 different strips for example.