Tip & How-To about Coby MPCD471 RadioCD Boombox

Fix the "USB" "no" problem

With the batteries removed, disconnect power and wait a minute or so before reconnecting. Now it should detect and play a CD.

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i dont remember power on password for hp nc4400


The power-on password prevents use of the computer until the password is entered. The
setup password prevents unauthorized changes to Computer Setup. To clear the
passwords, you must remove all power from the system board. If you do not know the
passwords, use the following procedure to clear the password:
1. Remove all battery packs.
2. Disconnect the AC power.
3. Remove the real-time clock battery.
4. Wait thirty minutes.
5. Reconnect the AC power. DO NOT INSTALL THE BATTERY!
6. Restart the computer. During Power-On Self Test (POST), a ? 162 System Options
not set? message appears.
7. Shut down the computer, then disconnect AC power again.
8. Replace the real-time clock battery.
9. Install the battery pack(s).
10. Reconnect the AC power.
11. Start the computer.
12.It should work....

Apr 08, 2011 | HP Compaq nc4400 Notebook

2 Answers

the player will not eject the cd but it will not play it either.


I know it sound crazy, but turn the system on, press eject while using a PLASTIC knife to lift the CD in the player. If the system is stock also try disconnecting the radio fuse for about 10 minutes or so with the car off. Reconnect it to see if the radio resets. You'll know the power completely went out because you'll have to reset your stations. By Resetting, hopefully the issue will solve itself. In a few of the system issues I've seen, when the motor won't open the faceplate, or the CD player won't give the CD back. I usually remove the faceplate or disconnect the negative side of the battery for about ten minutes. Try this if the fuse removal doesn't work. Good look. Let me know how it goes. there are other things to try.

Jul 27, 2009 | 2004 Honda Pilot

1 Answer

radio works, cd is stuck and will not eject. Tried everything except removing radio/cd


I had similar problem on 99 tahoe disconnect the battery wait a few minutes and reconnect cd should pop out on its own.

Jul 24, 2009 | GMC Sierra 1500 Cars & Trucks

4 Answers

i have problem of powe on password with my laptop compaq armada m700. how i can by pass my password power on password?


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Thank you

Dec 01, 2008 | Computers & Internet

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