Question about HP Compaq Dc7800 Ultra-slim Desktop Core 2 Duo 2.4g4gb 80gb Vista

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Dc7800 ultra slim blinking on powersupply

When i plug in the computer the green light blinking on the power supply when i plug out power supply on my computer it lights green

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  • 174 Answers

Check another power supply

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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SOURCE: System will not power up

Here is a Compaq document will walk you thorough a fairly lengthy procedure that should solve your problem. Here is the link: http://h10025.www1.hp.com/ewfrf/wc/document?docname=bph06788&lc=en&cc=us&dlc=en&product=431080&query=presario%20sr1220&dest_page=product#N561 Let us know how this turns out or if you need any additional assistance.

Posted on Jan 02, 2007

MUKHTAR
  • 2017 Answers

SOURCE: HP D530 SFF desktop

it is depend up on the power supply connector and it will give the output according to the smps you can do one thing try with installing other fan and see is it in perfect rotation. bye

Posted on Oct 09, 2007

  • 2 Answers

SOURCE: HP a350n not powering up.

unplug power and open computer and pull the small battery and wait 30 sec and replace
plug in everything and reboot
may have to re-enter cmos utility

Posted on Aug 25, 2008

  • 1 Answer

SOURCE: psu blinking green light, no power

I read all the solutions, followed the manufacturers instructions exactly, replaced the cmos battery and nothing solved the problem (blinking light on PSU after a power failure and no startup at all). I had ascertained that the PSU was intact by disconnecting all the PSU connections to drives and motherboard at which time the PSU LED stopped blinking and was constantly on.
Just before throwing my computer away I decided to follow the instructions listed by "guest" to unplug the power to the motherboard and then with the power supply back on to plug the cables back into the motherboard. No only did sparks not fly, but it started up and ran perfectly! Many thanks to "guest."

Posted on Sep 18, 2008

  • 35 Answers

SOURCE: hp pavillion desktop will not

Step 1 : Turn off the system by pressing the power button for 5 - 10 sec until the power LED is off. Removed all cables including the power cable (Exclude monitor cable and KeyBoard/Mouse).

Step 2 : Press power button for 5-10 sec again to drain fela power.

Step 3 : Reconnect the power cable at the back of the tower/computer and power on the system.

**If the same problem exists, Call HP tech Support (800-474-6836) because there is a high possibility that you have a bad Motherboard or Power Supply on the system.

Posted on Oct 28, 2008

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The most possibility is a defective LED back lights strip. You may open the TV back cover, un-plug the cable between the main board & the power supply, supply the AC power to it, if the back lights do not light up, the problem is the LED strip, if the back lights light up, the problem is the main board.

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Seems like this is the case of a bad power supply adapter, and needs to be replaced. But to make sure we are on the right track, you mention towards the last statement, you said that when your laptop is off, and the battery is installed on, and without the power supply, the computer power button would flash and no sign of life right? Well take these step to see if it is the power supply, 1, check to see if the small green light is lighting from the powersupply adapter. If it is not, then 100% you have a bad power supply. 2, does the laptop power on when using the power adapter only, and with the battery pulled out? If not, then 85% still is your power supply and the other 15% is your power jack, either is loose, or bent, as we tend to plug in and out alot. 3, Does the laptop power on with the battery itself without the power supply adapter? If it does, it is not your battery. The reason to the laptop power light blinking with the battery installed only could be that the battery is low/drain and does not have issufiect charge to power up your laptop. And to say that when your system is on and your plug in the powersupply, and the small battery icon says it's charging but actually it is not. It could still be your powersupply, it is damaged but a smart chip installed on your powersupply only sending signal to your laptop, this chip is only to prevent the battery from over charging. So if you have another power supply, you cna test this out. But at this point, they was you described things, I believe it to be the power supply. I hope this help, if you have any question, let me know.

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all atx powersupplies are generic-it dous not really matter what computer it comes from unless its a high end pc requiring loads of power-if your machine is intel you may need a supply with an extra twelve volt lead(two yellow and two black leads in a little block)-but for that pc i would just harvest a powerpack out of a dead machine

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1 Answer

Exact same problem


So, i have a laptop whos power supply was struck by lightning, and both the powersupply and the power house inside my laptop were fried. The sometimes on or off is because your Adapter is fried and giving random voltages, causing the computer to power off or overload. I would try getting a new adapter, but if the power part of the motherboard is fried, i would take it to a shop and have them diagnose it.
Good Luck

Jun 18, 2009 | HP Compaq Business d530 Ultra-Slim PC...

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Remval of power supply from hp d530 compact desktop


there are 4 screws on the back of your computer that will release the powersupply at that point you should be able to just slide it out keep mind were you unplug things
Company site http://www.attechcomputers.co.cc

Jun 18, 2009 | HP Compaq Business d530 Ultra-Slim PC...

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LED light is orange but computer is on.


it sounds like you may have overloaded the PSU, best thing to try would be to take out the dvd burner and and try booting again, if this doesn;t have any affect it may mean you need a new psu (power supply).

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Mac Ibook Power supply problem


On Mac iBooks the orange light comes on when it charges the battery. Once the battery is charged it turns green. Im guessing the other powersupply was aftermarket or broken. EIther way, if it starts out green - recognizes the battery isnt full - turns orange for a while - then turns green when the battery is full, then the computer and powersupply are working perfectly. Enjoy your iBook!

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