Any of the following events could be diagnosed as an IRQ conflict:

A device transfers data inaccurately.
Your system frequently locks up.
Your sound card doesn't sound quite right.
Your mouse doesn't work.
Garbage appears on your video screen for no apparent reason.
Your printer prints gibberish.
You cannot format a floppy disk.
The PC only starts in SAFE mode.

Larry's supervisor asked him to install a modem into his PC. Which of the following Interrupt Request (IRQ) settings for the modem would NOT normally cause a resource conflict?
IRQ 10
IRQ 6
IRQ 14
IRQ 1
The same IRQ setting as the modem in another computer

Interrupt Request (IRQ) lines are used by the peripheral devices attached to the expansion bus to request processor time from the CPU. Setting the modem to the same IRQ assigned to another device will eventually cause the computer to lock up with a resource conflict. IRQ 1 is reserved for the keyboard controller, and IRQ 6 is reserved for the floppy drive. IRQ 14 is reserved for the primary IDE controller. The interrupts that are usually free for added devices are 10 and 11. These IRQs are for general use. Other IRQs that may be available, depending on the computer setup are IRQ5 and IRQ3. LPT2 normally uses IRQ5, but if it is not being used (not installed or assigned), IRQ5 is free for use. COM2 and COM4 normally use IRQ3. If they are not installed or assigned, IRQ3 is free for use. Sometimes one of the cascade interrupts (IRQ2 or 9) can be used with no conflicts. Windows plug-and-play (PnP) handles much of the configuration difficulties for PnP-compliant devices.