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Computer Power Problems?
fisherhja Dec-20-00 01:25 AM
I recently installed a cd-rw drive. After the installation the computer will not work. The leds on the cd drive and the cd-rw drive come on momentarily and the hard drive buzzes and the led comes on for about 30 secs.. Thats it. The monitor screen says - no signal detected. All cables are corrected and so are the jumpers on the CD drive. I also tried putting everything back to its original configuration before the install of the CD-rw DRIVE. Does this mean no power to the motherboard? Is this a possible power supply problem? How do I check to see if the power supply is ok? During the install of the CD drive I vacuumed out the inside of the computer and removed and vacuumed the inside of the power supply.

1. RE: Computer Power Problems?
lbyard Dec-20-00 05:22 PM
In response to message 0
If the power cables to the mother are plugged-in correctly and the power supply and CPU fans keep spinning the power supply is more than likely OK. Most ATX power supplies can be connected to the motherboard only one way. If you have an AT (Baby AT) power supply, the two connectors are plugged into the motherboard with the black wires in the middle… “Black in the middle Ok, red your dead.” If you plugged them backwards, the motherboard is probably fried. From you description, that does not appear to be the case. See our power supply and motherboard FAQs for troubleshooting steps. Push down on the front of the video card to be sure it is seated properly. Reseat the memory. Be sure there isn’t a loose screw, etc. under the motherboard. Pull all boards except video. Disconnect all drives (all cables) except the hard disk and floppy drive. Do you hear a BIOS post beep code? Larry

2. RE: Computer Power Problems?
fisherhja Dec-21-00 02:03 AM
In response to message 1
Hi Larry,
Thanks for the quick response. I did not disconnect any cables from the motherboard other than the IDE cables and I know these are installed correctly. The CPU and power supply fans are all working. THe machine I have is a Compaq 9548 and the video card is built into the motherboard. In regards to your question there is NO Bios post beep code.
I did remove and reinstall the modem and a game card. If there is a bad connection etc on one of these would this cause a problem?

3. RE: Computer Power Problems?
lbyard Dec-22-00 02:43 PM
In response to message 2
If the Compaq is one of those that has a removable card cage, be sure the cage is fully plugged into the motherboard. Larry

4. RE: Computer Power Problems?
fisherhja Dec-22-00 09:24 PM
In response to message 3
Problem solved!! One of the things I did when I was adding a CD drive was to remove the modem card and a game card so I could clean all the dust out. Well, Today I removed these cards and powered up to see if the problem was related to one of the boards. To my amazement the system came up and worked perfectly. I reinstalled the boards one at a time to see if maybe one was at fault but the system still works. The only thing I can think of is one was not seated properly.
Anyway I just wanted to let you know in case you run across this in the future.
Thanks for your help and have a Happy Holiday.

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