Computer Hardware
A customer has just installed a new cd-rw. the system was working fine before the installation, but now the cdrom does not work, what should you suggest that the customer do?

add cdrw in the device manager
check the CONFIG.SYS
None of these
check the jumper setting on the cd-rw
flash or upgrade the BIOS

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Computer Hardware
Whenever you have a hardware resource conflict, it will more likely be an IRQ conflict rather than an i/o conflict because:

I/O addresses cannot conflict
software tends to mess up IRQs
there are a lot more I/O addresses than IRQs.
the BIOS sometimes has more of a problem controlling IRQs
software tends to correct I/O conflicts

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