Installed new ram ! Now AV won't run. Help needed Ps?

[wannabgeek]

Hi!
I brought some new Ram (1x 512 DDR400 PC3200 Hynix) to add to my existing (2x 256 DDR333 PC2700) and whilst the case was opened i also took out my old Connextant 56k pci dial up modem (i have BB on a usb ADSL modem) and also put in a pci firewire/capture card (Not in old Modem slot)...as i had some spare slots. After i booted all seemed fine until i tried to run Mem test (Floppy), i set the bios to boot from A; Drive, rebooted and got a 'Loading in/out error'! Am i right in thinking the error is due to the floppy drive! if so how do i fix it? Also should i have Disabled the Conextant modem before removeing it? And now i've more ram do i need to adjust the 'Virtual Ram' amount?
kind regards steve

[davejp]

Take out the new memory and try the test again. Whilst you are pokung around inside you should check the cable that goes to the floppy drive. Check both ends are seated correctly.

If the floppy is OK and the machine does the test OK swap the memory about (take out the old and install the new) and re-run the tests.

It may be that the two memory types are not compatible. Mixing speeds is not a good idea!

Dave