Question about Compaq d530 CMT PC Desktop

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D530 CMT minttower power problem

LED inside motherboard is solid green, Front Panel LED is solid green but no fan and computer start up. Tried to clear CMOS by placing button on motherboard, removed BIOS battery and reinserted it. Changed jumper from Password to Boot Block and to remove password also. checked Battery voltage it is 2.91 Volts.

With above various combination, i was able to start CPU and fan but no video on screen. I unplugged the system then no power again. tried above various method but no fan and CPU turn on. Only front panel LED and Motherboard LED solid green

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Re: d530 CMT minttower power problem

Hi, from your description it appears your power supply is ok.

Remove your RAM chips, clean everything with a soft brush or a can of compressede air [from computer store] Reinstall the RAM making sure it is seated firmly.

If this does not solve the problem, Are you using 1 or 2 RAM sticks? if 2 then remove them again and swap them around.

stick one in dimm2 and stick 2 in dimm 1.

If you only have one stick then beg or borrow another stick and try it. If all fails you may have developed a mobo problem.

Regards mistyman

Posted on Oct 15, 2007

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What is fabric bios pasword for hp compact d530 CMT

you have 2 small wires connected with piece of plastic on motherboard , close to that says" bios pass" take that out ,that plastic and you won't have password on bios , or turn off computer , take it off electricity power and take out battery from MB and press button for starting few times to drain electricity that is left on power supply , then get back everything and you won't have pass , hope ti helps

Mar 06, 2012 | HP Compaq d530 CMT PC Desktop

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I need a layout diagram for an HP 085Ch motherboard. Please don't tell me to go to the vendor's home page. Tried that, got about 250k hits on any search I input.

if you are planing to connect the front panel better if you send me some pictures in order to asist you better...jesus_andre20 at /////h///o////t///m/////a///i////l/////.////c/////o//////m///

Jun 19, 2011 | HP Compaq d530 CMT PC Desktop

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Hi guys, I have an issue with my old HP Compaq D530 CMT Desktop. The power light blinks 5 times when I power on the pc (Pre video memory error). The Hp site suggests to: 1 Reseat the DIMMs in the memory...

Try the DIMMs in another motherboard.

Download the free 'MEMTEST86+' software, and burn it to a CD-recordable disk.
Put just _one_ DIMM into your computer, and boot from that disk, to run an intensive "memory-test" of that DIMM. If it "passes" (about 30 minutes per 512MB), then repeat with the other DIMM.

Jan 06, 2011 | HP Compaq d530 CMT PC Desktop

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My cpu fan spins very fast than normal and makes a lot of noise. I use hp d530 cmt- 3.06GHz

Most fans are "temperature-sensitive" -- if it is sensed that your computer is close to over-heating, the fan will run at full speed, very noisily, to try to cool it.

So, shut it down, and disconnect the AC power.
Remove the side-panel.
Purchase a can of compressed-air.
Give the computer a "blow-job", to remove excess dust,
since the layer of dust is acting like a blanket,
keeping heat inside your computer.

Sep 20, 2010 | HP Compaq d530 CMT PC Desktop

2 Answers

HP won't power on at all~PSU light blinking, then solid, then off

Dead short on the machine causing the power supply to go into shutdown (Fold Back Protection)

Remove all of the connectors coming from the power supply (Label them so that you know here they go back to on the Motherboard and the DVD etc (Including the processor fan one)

Place all of them back one at a time starting with the main one if the led stays on then plug in another till you locate the short.

If the led dies when you plug in the main MB connector then you are in deep brown stuff

All you can do then is to remove the Ram and any other unpluggable device to see if that is the cause

Jul 05, 2009 | HP PAVILION A6230N DESKTOP PC

1 Answer

Hp530 Ultra Slim starts and stop after 3-20sec

I have had this once before, and then it was one of the hard disk cables which was interfering with the fans inside the case. In my PC it was the PSU fan which was being halted. Try moving the cables around inside the case and ensure none of the corners where they are folded are protruding into any of the fans.

Feb 03, 2009 | HP Compaq Business d530 Ultra-Slim PC...

2 Answers

Hy hp d530 won't turn on


I have a similar problem:

My Compaq d530 was running fine until one day during plugging in a USB device (MP3 player) the system completely stopped working. The only thing which is active is the green LED on the mainboard.

I have checked several things and have found the following:
- IDE cable had burn marks!! (nasty)
- USB connection cable which runs from the front to the motherboard has changed in color. (darker green while all other connector have e more light white color.)

These are the signs of a brun out, but I do not have any solution to repair this.

Economically the best thing to do is buy a second hand (or new) system. (d530 are about 60 euros these days (march 2009). Hardware parts can maybe salvaged.

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Hp compaq d530 CMT motherboard diagram

You are missing the front headphone / microphone connector that plugs into the motherboard. Or a way to jump this to close the headphones so the sound will come out the back.

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HP D530 Will not start:

It can't be the RAM, it would be beeping if the RAM was not installed properly. If it was and they were bad, it would fail in Windows.

We've had numerous similar problems to yours with our D530's. Check the motherboard to see if any of the capacitors (round barrel shaped components) are swollen (round on top) or leaking. It is a known manufacturers defect and they were replacing those motherboards for free, unfortunately that program just ended.

If the capacitors are all flat on top, its probably the power supply. We've had four go bad in the past month. They sometimes smell like something is burning before they go bad. The D-530 model is unfortunately our most unreliable model ever, they are junk. Good luck.

Nov 26, 2007 | HP Compaq Business d530 Ultra-Slim PC...

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