Very strange memory problem 8gb installed 3.74gb usable

Is this a laptop, SODIMM memory?
Odd it passes memtest. The BIOS reads the SPD (Serial Presence Detect) chip on the DIMMs to show it's installed.
I think it's solved, maybe, the slot isn't working at all. Toasted as carwiz said.

Also odd you show so much RAM as hardware reserved though.

Britton30 said:

Is this a laptop, SODIMM memory?
Odd it passes memtest. The BIOS reads the SPD (Serial Presence Detect) chip on the DIMMs to show it's installed.
I think it's solved, maybe, the slot isn't working at all. Toasted as carwiz said.

Also odd you show so much RAM as hardware reserved though.

DDr3 1333mhz

I doubt that memtest even looks at hardware reserved memory. That's set and used by the BIOS. I don't think Windows will access it so neither will memtest. If the BIOS can't allocate the memory, it marks it as reserved. There used to be an option to do a full memory test on boot but it takes a while so the default was changed to a "presents test". I don't even remember seeing the option in the last 10 years or so.

seven09 said:

What about a startup test.?

Edit: Tried, did not catch anything...

Also the graphics are non-integrated and use its own 1gb of memory so it's not reserve for graphics

From previous post:
There used to be an option to do a full memory test on boot but it takes a while so the default was changed to a "presents test". I don't even remember seeing the option in the last 10 years or so.

So it is a laptop, I was going by your specs which say desktop. It explains the pic, it is SODIMM memory, that's a physical size reference rather than type, as DDR3 is.

I wonder about the label on the board. "Replace With HP Spare" It looks to me like it's a known defective motherboard.