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?

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

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Computer Hardware
In laser printer technology, what happens during the conditioning stage?

The corona wire places a uniform positive charge on the paper
All of these
A uniform negative charge is placed on the toner
A uniform negative charge is placed on the photosensitive drum
None of these

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