No display with 4GB + 512MB Video

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testVISTA - 29 Jun 2008 21:37 GMT

I have seen postings with computers with 4GB where vista cannot see all the
ram. I have a computer and recently upgraded to 4GB from 2GB. I already
have a nvidia 8600GT video card.

I dont get any display and sometimes the display comes and it shows 4GB RAM
but lasts for 5mts before the monitor shuts down to no display.

Any ideas how to fix this problem so I can get at least the display ? I
dont mind reduced RAM since I am hoping to move to 64 bit if I can find all
the drivers I need.

Thanks

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PvdG42 - 29 Jun 2008 22:11 GMT

> I have seen postings with computers with 4GB where vista cannot see all
> the
[quoted text clipped - 11 lines]
>
> Thanks

Before installing the additional RAM, did the video card/video drivers work
correctly? If so, the additional RAM you installed might be faulty. Try a
reliable memory testing tool like MemTest86.

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AJR - 30 Jun 2008 01:09 GMT

In addition to PvdG42's post - did you "put back" the original memory? If
so - result?

>> I have seen postings with computers with 4GB where vista cannot see all
>> the
[quoted text clipped - 15 lines]
> work correctly? If so, the additional RAM you installed might be faulty.
> Try a reliable memory testing tool like MemTest86.

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Colin Barnhorst - 29 Jun 2008 22:39 GMT

Check the monitor connection and the input selector. Reseat the video card
and check the connections. Make sure you have sufficient cooling provisions
for the unit. How close is the additional memory taking you to the limit of
your power supply?

The 4GB issue has nothing to do with it. That discussion has to do with the
BIOS reserving some memory for memory-mapped IO and thus not allowing
Windows to address the full 4GB. This is normal with all 32bit Windows.
The 4GB displayed is the physically installed ram.

>I have seen postings with computers with 4GB where vista cannot see all the
> ram. I have a computer and recently upgraded to 4GB from 2GB. I already
[quoted text clipped - 10 lines]
>
> Thanks

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Tom Lake - 30 Jun 2008 20:09 GMT

>I have seen postings with computers with 4GB where vista cannot see all the
> ram. I have a computer and recently upgraded to 4GB from 2GB. I already
[quoted text clipped - 6 lines]
> dont mind reduced RAM since I am hoping to move to 64 bit if I can find all
> the drivers I need.

I have 8 GB installed on my mobo and can't use Nvidia's 1 GB video card
since my motherboard has no more address space. If I remove 4 GB, it
works fine. If your motherboard can only handle up to 4 GB then it's possible
there's no room in the address space for the Nvidia card.

Tom Lake

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