I have searched for a graphics card memory tester also, but found
nothing. I appreciate the thorough explanation.
-mike
Franc Zabkar wrote:
> On Sat, 30 Jun 2007 02:58:17 GMT, Mike <snorlaxward DeleteThis @DELTETEmchsi.com>
> put finger to keyboard and composed:
>
>> Bought a Biostar 7900GT card off of ebay. Installed it, and it is not
>> working right. From the first boot into BIOS, there are weird things,
>> like: some characters in the BIOS selections are differnet colors, and
>> some of the characters are wrong (show a 'N' instead of a 'g'. Just a
>> few wrong letters on each screen. I think that the wrong letters stay
>> the same with each reboot.
>
> If you can record all the misspellings, then you may be able to
> identify a particular failing bit.
>
> For example, if you really meant "show an uppercase 'N' instead of an
> uppercase 'G'", then here is the bit difference:
>
> N = 4Eh = 0100 1111
> G = 47h = 0100 0111
> ^
> This is the faulty bit
>
> This could point to a fault in the card's video RAM.
>
> I suspect that either NVIDIA or the graphics card manufacturers have
> diagnostic utilities to exercise the GPU and RAM chips, but I have yet
> to find such a utility on the Net.
>
> - Franc Zabkar
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