I have an old HP Pavilion N5190 (Pentium 3) running Windows XP and wanted to expand the memory beyond 256MB. The user manual and site state that the maximum memory is 256MB. I installed a 512MB SODIMM chip in place of the 128MB chips and the machine went into a continuous do-loop during the POST; it would start and then a few seconds later restart. Can someone explain how the BIOS knows whether the amount of RAM is consistent with the machine specs and can that number be changed in the BIOS to expand the memory domain. I haven't seen any articles or forums that explains how the BIOS actually checks the installed memory and how it knows whether it's adequate or not. I have read a post somewhere that alludes to the fact that the memory is somehow limited by the page address of virtual memory and that the virtual memory page address can be altered. I really would like to expand the machine RAM to 1GB to reduce virtual page (ie.; hard drive) usage and improve the machine performance. Any help would be appreciated. Thanks in advance.
(Solved) - memory limits / memory check on startup(3 posts)
Sorry to say but the memory issue on your laptop machine is a hardware limitation which is too complex to go into without great technical detail. (Hardware Architecture - Chipset, Address Lines, Memory Chip Density, Banks, Refresh Timing, Etc., Etc., Etc.)
HP Pavilion N5190
Chipset: Intel 440ZXM-100
Fixed RAM: 0MB
Maximum RAM: 256MB
Standard RAM: 64MB
It is what it is.
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