A friend asked me to take a look at his laptop that is running too slow lately. It is an old HP Pavilion laptop which is supposed to have 512 MB of RAM, but Windows is only seeing 256 MB. The BIOS is reporting all 512 MB, and a memtest86 test tested 512 MB as well. Although I appreciate any suggestion, I'm not looking for suggestions on how to speed a low-resource machine up. I'm just having trouble making Windows recognize the whole RAM, so I am asking for recommendations or opinions regarding that specific problem. I don't have much information about this machine, so I don't know when or how this started. Event logs don't show anything related to this. I think that maybe re-installing/repairing the Windows installation could help, but I would like to avoid doing that unless it is absolutely necessary. It is an HP Pavilion dv5220LA machine with an AMD turion 64, running Windows XP professional SP2. It has 128 MB of video memory, and the main memory is not being shared with video. I have not had the time to open the machine to look at the physical memory modules, but I expect to do that tomorrow night. Thanks, CarlosDL
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