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05-07-24 02:34 AM |
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| 0 users currently in Computing | 1 guest |
| Main - Computing - NEW question about RAM | New thread | New reply |
| Silvershield |
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 Sand Crab Level: 36 Posts: 179/237 EXP: 285641 Next: 22469 Since: 07-26-07 From: North Jersey Last post: 5558 days Last view: 5336 days |
I know that this isnt some dedicated tech help forum, but you folks are fairly knowledgeable so I figured I might at least give this a try.
I have Vista Home Premium 32-bit, and when I built the machine I put 2GB of RAM into it. I bought a third GB and tried to install it today, but for some reason Vista won't recognize it. I tried swapping the various sticks around to see what the problem is, and here's what I found: 1. Slots 1 and 3, which are the ones that have always been in use, always recognize the two original sticks of RAM if they are in those slots. 2. The new stick of RAM is never recognized, even if it is in slot 1 or 3. 3. Slots 2 and 4 seem to never recognize any of the RAM I put in them, whether it's one of the two old sticks or the new one. I have no idea what the problem might be. Any advice? For reference, some of the parts are listed below; tell me if I should provide any others. Motherboard Original RAM New RAM |
| Slimesmile |
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Level: 14 Posts: 27/28 EXP: 11183 Next: 1888 Since: 09-30-08 Last post: 5687 days Last view: 4542 days |
Probably your BIOS uses memory remapping. Check for an option in your BIOS SETUP, and disable it.
Memory remapping maps your memory address range of 2 GB - 4 GB to 4 GB - 6 GB. As a 32-bit operating system can only address up to 4 GB, this option is only useful for 64-bit operating systems. On a 32-bit OS it will just leave you 2 GB in total, no more. The purpose of remapping is that when there is a memory hole between the 2 GB and 4 GB adresses, these addresses can be used to address hardware components, and you get the full amount of memory you installed on a 64-bit OS. Windows uses the 3,2 GB - 4 GB address range for this, that is why you can never use more than 3,2 GB on a 32-bit OS when remapping is disabled (still better than 2 GB though). For more information, read the Microsoft Knowledge Base article. |
| Main - Computing - NEW question about RAM | New thread | New reply |
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