Just a shot in the dark, try reversing the RAM - put the 512 where
the 1gb was and vice-versa.  Does the motherboard have 2 memory
slots or 4?

Peter Shkabara wrote:

> I need some suggestions on testing RAM. My computer sometimes locks up where
> there is no response and even the mouse does not respond. The only solution
> is to press the reset button. Details of the machine:
>
> Intel D845PEBT2 motherboard
> 2.4G P4 CPU with no overclocking
> 1 stick Samsung 512M RAM
> 1 stick of generic 1G RAM
> Running XP Pro SP2 with all latest patches. This is a new clean install less
> than a month old.
>
> I am suspecting that RAM may be the problem. RAM testing software, however,
> shows no problems. The lockup happens almost on a daily basis, and often
> occurs when accessing a web page using Firefox or IE. Latest lockup happened
> with some video authoring software, however. I suspect that I will need to
> replace the RAM to see if it is the problem. My post is to request
> suggestions of other paths I can take. Thank you.
>
>
> Peter
>
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