new hardware not functioning

hi folks

have installed two replacement items on a friends budget machine, neither of
which are particularly hi end so should be supported by your average budget pc
1. an ATI radeon 7000 64mb 64 bit graphics card
2. a CMI 8738 7.1 channel sound card

the machines spec is:
amd duron 1.5ghz
256 mb ram
abit kt7a motherboard with award bios v6.00pg
win xp sp2

both items were recognised by windows on first boot after installation
both items are recognised by device manager and show as functioning properly
both items have had the supplied software installed after safe mode boot and
reinstalled with only basic startup items running to avoid conflicts
have checked for updated drivers and known issues on manufacturers sites
have run thru windows troubleshooters

problem is - neither functions!
1. no sound from card at all, neither cd audio or system sounds
2. display is only using standard vga drivers and display properties does
not recognise card. also an error states that the supplied ati software
unloads on boot due to a non ati driver in use?!

so my question is, how come both items are recognised by windows but do not
operate even though supplied drivers have been (correctly i hope) installed?
its not as if the bios or windows doesnt recognise them and how on earth can
device manager say they are ok yet display properties not recognise the
graphics and the sound not function at all?

yours very confused...
.

Relevant Pages

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