Question about HP Compaq DC7900 Small Form Factor PC Desktop

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Dc7900 sff Power Button?

I have a dc5700 sff and i was looking to upgrade to a dc7900 sff but they have different connections for the power button. Where do I find a new power button to fit?

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  • HP Master
  • 7,627 Answers

You can try ebay.

Posted on Jan 24, 2013

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Posted on Jan 02, 2017

ErusTownsend
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SOURCE: Somenon put a power on password on a hp desktop

Turn the unit off. If you open the unit there will be a jumper to clear the CMOS and a battery. Remove the battery and then switch the jumper as silkscreened on the board. usually there are 3 pins currently crossed are 1 and 2. switch it to 2 and 3, press the power button then hold for a few seconds. unpress the button and remove the pwoer cord. press and hold the power button again for a few seconds to clear all power. reconnect the jumper to 1 and 2. put battery in and plug and boot. password should be gone.

in some units there is a "clear password" or "cmos password" jumper. crossing this will remove the password in those units.

Posted on Feb 17, 2010

  • 10406 Answers

SOURCE: my DC7900 SFF beeps 5 time and red led flashing

> 5 beeps

Something is wrong with some of the hardware.

If there is an add-in video-card, make sure that it is correctly "seated" into its slot on the motherboard. It's best to completely remove the card, and then re-insert it.

Similarly, check that the RAM is properly "seated".
If you have more than one stick of RAM on the motherboard, remove some of the sticks, until there is only one stick still connected, and try again.

If there is only one stick of RAM, remove it, and borrow a stick of RAM from a friend, and try it.

Beyond that, take your computer to a computer-store, for professional trouble-shooting.

Posted on Nov 12, 2010

Geekman
  • 32281 Answers

SOURCE: I'm having a problem with HP DC7900 SFF. The Video

The amount of allocated shared video memory is configured in the BIOS configuration - video memory.

Posted on Jun 20, 2011

Geekman
  • 32281 Answers

SOURCE: I'm having a problem with HP DC7900 SFF. The

The amount of allocated shared video memory is configured in the BIOS configuration.
Go into the BIOS - video memory to change the amount of video RAM..

Posted on Jun 20, 2011

  • 10 Answers

SOURCE: HP Compaq DC7900 PC Desktop power

please mention which operating system is being used or where you facing password problem????

Posted on Sep 10, 2011

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1 Answer

My hp Compaq DC7900 has 5 beeps with 5 red light flashing does this 3 times. then the fan kicks on. That's all it does. Anyone know what this is?


This is a sign of a pre-video memory error. If your DC7900 has a video graphics card, that card has probably failed or doesn't have enough power. On at least some of HP's Compaq DC7900, the video card uses a PCIe x16 slot.

There are two things to consider when you choose a new video graphics card: 1) it must fit in a slot in your case and 2) your power supply must meet the requirements of the card. The small tower format of the HP Compaq DC7900 came with a 240W power supply. Most modern video graphics cards often need more power. You may need to upgrade the power supply.

I hope this helps.

Cindy Wells

Aug 13, 2014 | HP Compaq DC7900 Small Form Factor PC...

1 Answer

Diskette drive (CD DVD player) of HP DC7900 powers up momentarily (for 1 sec) every 10 mins. How to stop this ?


if the optical drive still powers on even when the pc is powered off than the problem seems to lie in tha power supplys connector. it is still giving power when it is not supposed to

Mar 05, 2014 | HP Compaq Dc7900 Sff Desktop Core 2 Duo...

1 Answer

Hp dc7900 powers up momentarily even when computer is off


if the power is coming on automatically does it remains started or turns off?

Feb 24, 2014 | HP dc7900 PC Desktop

1 Answer

Will not power on


Hi
Check the hard disk power connections.Remove it from power and fit it again.
Remove the CMOS battery and connect power without it.
Does it power on?If so,replace the CMOS battery.
If not,check the power cable,probably replace it or first switch it with the monitor's.

Feb 27, 2012 | HEWLETT-PACKARD Compaq DC7900 Small Form...

1 Answer

I'm having a problem with HP DC7900 SFF. The Video Card shared memory is 1GB. according to there technical paper maximum should be 384MB only. I'm using winxp sp3 with 2GB memory. How can i change...


The amount of allocated shared video memory is configured in the BIOS configuration.
Go into the BIOS - video memory to change the amount of video RAM..

Jun 20, 2011 | HP Compaq DC7900 PC Desktop

1 Answer

I'm having a problem with HP DC7900 SFF. The Video


The amount of allocated shared video memory is configured in the BIOS configuration - video memory.

Jun 20, 2011 | HP Compaq DC7900 Small Form Factor PC...

1 Answer

My DC7900 SFF beeps 5 time and red led flashing


> 5 beeps

Something is wrong with some of the hardware.

If there is an add-in video-card, make sure that it is correctly "seated" into its slot on the motherboard. It's best to completely remove the card, and then re-insert it.

Similarly, check that the RAM is properly "seated".
If you have more than one stick of RAM on the motherboard, remove some of the sticks, until there is only one stick still connected, and try again.

If there is only one stick of RAM, remove it, and borrow a stick of RAM from a friend, and try it.

Beyond that, take your computer to a computer-store, for professional trouble-shooting.

Nov 12, 2010 | HP Compaq DC7900 PC Desktop

2 Answers

Somenon put a power on password on a hp desktop DC7900 PC


Turn the unit off. If you open the unit there will be a jumper to clear the CMOS and a battery. Remove the battery and then switch the jumper as silkscreened on the board. usually there are 3 pins currently crossed are 1 and 2. switch it to 2 and 3, press the power button then hold for a few seconds. unpress the button and remove the pwoer cord. press and hold the power button again for a few seconds to clear all power. reconnect the jumper to 1 and 2. put battery in and plug and boot. password should be gone.

in some units there is a "clear password" or "cmos password" jumper. crossing this will remove the password in those units.

Feb 17, 2010 | HP Compaq DC7900 PC Desktop

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