Question about HP Compaq d530 SFF PC Desktop

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I have a hp a350 cpu.the problem is that the light of led has gone red,as before in working condition it was green. It can't start.the power to hardisk is also not coming.please tell a sollution.

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As you say has become red and no power to the hard disk.
First check the power cable for any loose connections and check if it give power to the cpu and the fan placed on processor starts working as you start the power. If fan it starts and with in few seconds stops then your power supply/SMPS is weak or damage. So replace it for proper working of your computer. And if after power on all fines but red led on monitor and no power to hard disk Try to replace the hard disk power cables because they are not working because of it no operating system is detected and led of monitor is red. After replacing hard disk cables hard disk starts working and still no display or red led on monitor check the vga cable for loose connection or replace it.If you are using vga display from graphic card try to get display first from onboard vga slot.After it your problem will disappear and your pc run smooth and fine.

Posted on Aug 27, 2010

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Posted on Jan 02, 2017

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How do i fix a problem of green power led continuously blinking in Hp compaq nc6320 laptop even when the battery is removed and the motherboard is outside the case?


HP Notebook PCs - Troubleshooting LED Blink Codes or ...

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1 Answer

Beeps red light hp pc


The blinking should be in a pattern.

Power Green On (S0) Computer on
Power Green 1 blink every 2 seconds (S1) Suspend Mode
Power Green 1 blink every 2 seconds (S3) Suspend to RAM
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Power Red* 4 blinks 1 second apart Power supply overload (crow bar)
Power Red* 5 blinks 1 second apart No memory
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Aug 17, 2013 | HP Computers & Internet

1 Answer

Power light flashing green to red


Assuming the "squiggle line" is the Utility LED the unit has proper power. The light is steady green and not flashing, correct?

Have you reset the unit?

Try removing all but one attached device to verify it's not an overload condition.

A photo of the control panel would help.

Dec 23, 2012 | HP Compaq T1500 XR (204203003) UPS System

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If a warning light indicates the CPU is not functioning, does that mean I have to get a new processor?


Yes! judging by all the cascade break downs, I would suggest replacing the motherboard, HP has a history with motherboard issues.

Mar 29, 2012 | HP Computers & Internet

1 Answer

The computer wont start up, i can see a green light on the motherboard and nothing else. even the power button wont show up led light.


This can be a power supply problem or a motherboard problem.
One or the other has probably gone bad and must be replaced, if this is what happened.
Start by disconnecting all things from the motherboard except the CPU and memory.
If the system starts, then you've ruled out the power supply, CPU, motherboard, and memory.
If not, remove the memory and see if it tries to start. If so, then the problem is the memory.
If not, then it's definitely the power supply, CPU, or motherboard.

Aug 03, 2011 | Intel DH55TC Motherboard

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Hp compaq dc 7100 , my problem is that as i start my pc than 4 beep with time interval 0.2 sec with led than after 0.5 sec it start again , remain continously


Are they Long Beeps? Does the RED led light on the front show up?
If there is no RED led light blinking, then the problem is your RAM.
If there IS a RED led Light showing up, then the problem is your Power Supply.

Mar 27, 2011 | HP Compaq dc7100 PC Desktop

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Hi, My SONY CPD G420 monitor has suddenly stopped working - the front led is blinking amber. After power cycling the LED stays green for a few seconds before going back to blinking amber. I have verified...


just unplug the signal cable and see if it shows a warning! if it shows then the monitor is in some working condition! this problem mainly is not the monitors problem its the systems problem, it seem as if the system is in standby when u on it right??? it happens when the processor doesn't get supply or it refuses to come on! you will see that the red hdd load led will not light when u start the CPU; just open the CPU and unplug the smps from the board and blow the pins to clean them up and re-fix it and see it will work. if still it doesn't work try some other smps it will work! reply and revert back for more help with a vote!

Jul 24, 2010 | Sony CPD G420 19" CRT Monitor

1 Answer

AOC color monitor model 5En...during power on all led lights blinks then stops blinking without display action. all led lights on no more action observed.


actually if u repair an aoc monitor alone without getting connected to cpu once u switch on the monitor all led's will lit on ( green light ) it will remain on situation until u connect the vga connector to cpu that's the time led's will lit off and only the power led will remain in green condition.some aoc 5en once u power on power led is in green condition and if not connected to cpu it will be in orange condition.hope u get some idea but i am not sure if it will work with ur monitor. but as long as LEDs lit on i think no problem with ur monitor.

Nov 02, 2009 | AOC 5 En 15" CRT Monitor

1 Answer

Windows not loading and monitor not switching on


Usualy the red light is the LED for the harddrive. Have you removed the hardrive and replaced it? Is there a reason that maby the power connector is not attached. Also, Is this computer a privately built pc or is a general manufacturer, like Hp, Dell Compaq etc. Also, If the battery on the motherboard has gone south then the bios setup setting will not be saved and the machine would not know how to boot. If the drives are all connected correctly, when you first boot the machine start tapping the del button. Depending on the Mfr, For some Hp's you need to tap the f1 key, there should be a message during the first part of the boot where it says, "To enter setup hit del, or F1 or etc." After you are in the blue screen of the bios, look for a message that says enter default settings. Hit that key, then F10 to save, exit, and boot. If this fixes the problem, then you will see the red LED for the hard drive illuminate and if the hard drive is intact with the OS then it should boot up. If it does boot up, after you are finished for the day, shut your system off as you usually would. The next time that you boot your system, if you have to enter the bios setup and enter the default setting again, then more than likely it is the motherboard battery. It is a bit difficult to diagnose something like this on the cuff. There are other conditions that can cause this like a damaged motherboard, bad memory, jumpers incorrectly set on the drives or motherboard just to mention a few. Hopefully this can be a place to start anyway.

Regards, Mike

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