Bios wont recognize RAM upgrade

[akaSM]

So, I just installed an extra GB of RAM into my computer, according to crucial, it can handle up to 2 GB, with 1 GB in each of it's slots, but it'll only recognize 1 GB. I Tested both slots, and both RAM sticks, and they work fine, but if I put both sticks at the same time, only one will get recognized. My PC has a clean reinstall of Windows XP x32, with no stuff installed ATM, it's not even online right now because I haven't installed the antivirus. My sticks are both Kingston KVR533D2N4/1g, but one is taller than the other one. Any ideas guys?

[Krylo]

it can handle up to 2 GB, with 1 GB in each of it's slots

Why isn't this archaic machine in a museum somewhere?

[synkr0nized]

You mention Crucial when talking about what your computer can handle but then Kingston when mentioning the RAM chips (two memory companies). What's the actual motherboard model or computer brand/model, and are there potentially any quirks there (need to use certain DIMM slots, timing issues, etc.)? Also, despite being the same model number, if I am reading that post correctly, the difference in size could mean that aspects of the RAM have changed between production times. I have 4 GB in my rig, though I bought the second 2 GB pair a few years after putting it together. Despite being the same manufacturer and model number/part number, it had different timings than the original pair (they had changed the defaults in order to be more available to more motherboards); however, that didn't affect the detection of the RAM -- I just had to set them to the better timings.

[akaSM]

Because my laptop will be away for a while (I hope it's back this week), and since my bro and sis will be using this PC, an extra GB didn't seem like a bad idea.

[akaSM]

You mention Crucial when talking about what your computer can handle but then Kingston when mentioning the RAM chips (two memory companies). What's the actual motherboard model or computer brand/model, and are there potentially any quirks there (need to use certain DIMM slots, etc.)?

I just used Crucial to see the max amount of RAM it could handle. Is there a way to check the brand and stuff offline? It's a built PC, without a brand or anything. I'm on my phone right now since the PC has no antivirus...or anything installed, I can download anything fine on my phone though.

EDIT: ok, I have now installed ESET blah blah trial, google chrome and the video drivers, now I'll go and install Everest or Sandra or whatever I find a trial for, so that I can get the motherboard info.

EDIT número dos: so, it seems I have one of this http://www.intel.com/p/en_US/support/highlights/dsktpboards/d102ggc2. I'll check if I can do anything in while someone replies

Yet another EDIT: So, I upgraded the MB bios to the latest version (2007? damn, that's old o_o) and still nothing. Also, even though the sticks have the exact same model, one of them has 16 black thingies, 8 on each side. The other one has just 8 on one side and is shorter, could this be the problem here?