Why doesn't Windows setup start with a new RAM bar?

Question

Iron

Dear, tell me.
The crux of the problem is this. I have a laptop with 2 gigabytes of ram. I bought another 4 gig stick for it. In terms of frequency and standard, the bar corresponds. The laptop is running Windows 10 (32-bit). As a result, 6 gigs are displayed in the properties and parameters, but only 1.89 are available. I decided to install Windows 10 (64-bit). As a result, installation through the BIOS does not work either from the disk or from the flash drive - there is a cyclic reboot. If I take out a new bar of RAM for 4 gigabytes, then the installation goes fine.
What could be the reason? And how can I eventually make a new 4 gig bar workable?

Answer 1

And what prevents you from putting one bar
Install Windows
Put the second
And test

Answer 2

It would be nice to make sure on the manufacturer's website that the beech generally supports memory drain.
if this is not an old model, then perhaps there is a ceiling of 4 gigabytes in total and he is simply not able to see more, which is why he is buggy.