Question about HP Compaq Presario SR1220NX (PJ517AAR) PC Desktop

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System will not power up

HP Compaq Presario SR1220NX. System was working fine. Suddenly stopped powering up. Power supply is Bestec ATX-250-12Z. Green light on back of power supply blinking fast and continuously. When power supply is disconnected from motherboard the green light stays lit steady.

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Re: 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: Let us know how this turns out or if you need any additional assistance.

Posted on Jan 02, 2007

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I need a power supply model atx250w-12z

part number you need is KJ383AA, KJ383AAR

they have the dimensions that fit your computer please look for your self. Measure your power supply you have.
New PC Power Supply Upgrade for Compaq Presario SR5450F KJ383AA Computer

May 14, 2014 | HP Compaq Presario SR5450F Desktop PC

1 Answer

HP Compaq Presario SR1430NX Powering On Issues...HELP!!??!??

If the power supply is "Fine" then it has to be your motherboard. Look for the capacitors around the board. They should have either a dished or flat top. If any are domed or have a powdery substance on them, they will need replacing. Or if you don't want to do this, replace the board.

Apr 26, 2013 | HP Compaq Presario SR1430NX (PS566AA) PC...

1 Answer

Want to know power consumption of a hpsr5410f

The HP Pavilion w1907, 19 inch Widescreen monitor, RK283AA,
uses 49 Watts in operating mode, 2 watts in sleep mode.

The Compaq Presario SR5410F Desktop PC, has a 250 Watt power supply. (Maximum wattage rating )


Back in the day when this computer was made, Power Supply manufacturers were 'fudging' a bit on the truth.

(HP has their Power Supply's made by another company.
Bestec, HiPro, and Delta, are three of them )

Actual wattage is more like 60 to 70 percent, of what is stated.
250 divided by 10 = 25.
25 times 6 = 150 (60 percent)
25 times 7 = 175 (70 percent)

Your Power Supply's actual maximum rated wattage, may be as low as 150 Watts!

Going with the Power Supply produces a maximum of 250 Watts;

If you are playing an intense game, or have several programs running at once, you MAY reach using 250 Watts.

Just surfing the internet? About 100 Watts.

Desktop PC plus Monitor:
1) Surfing Internet: 149 Watts, or let's just say - 150 Watts

2) Computer is maxed out running hard?
249 Watts, or let's just say 300 Watts.

Voltage times Amperage = Wattage
Wattage divided by Voltage = Amperage

Number 1 above? About the power it takes to use a 100 Watt light bulb, and a 50 Watt light bulb. (Incandescent)

Number 2? About the power it takes to run three 100 Watt light bulbs.


Apr 16, 2012 | HP SR5410F 18GHz Presario Pentium Desktop...

1 Answer

It won't turn on and the light on the back is flashing?

Sounds like a power supply problem. Check out this web site:

This link should take you to your model of Compaq computer power supply.

Feb 03, 2011 | Compaq Presario SR1810NX Sempron 3200+ 1.8...

1 Answer

Green light in rear flashing won't part up

The green light flashing is a diagnostic LED light, telling you there is a power failure.
More specifically a bad Power Supply.
Weak voltage power rail.

The Power Supply used in a Compaq Presario SR1010Z desktop computer, is a 300 Watt unit, and is an ATX form factor.

[ATX form factor for a Power Supply, denotes the size of the Power Supply case, and the shape.
It is approximately 6 inches Long, 6 inches Wide, and 3-1/2 inches Tall.
The ATX form factor for a Power Supply is used in over 90 percent of the personal computers out there, and is as readily available as the air we breathe]

Usually, HP uses one of three generic Power Supply manufacturers.
1) Bestec
2) Delta
3) HiPro

All are low quality Power Supply manufacturers.

This is HP Support, and the main menu page for the Compaq Presario SR1010Z desktop computer,

If you click on Manuals, then on Upgrading and Servicing Guide on the following page, there are instructions on how to open your computer case.

This is instructions on how to replace a Power Supply, from HP Support,

(It's for a Pavilion a6230n desktop computer, but after you open the computer case of your Compaq Presario SR1010Z, the instructions are the same)

What Power Supply would I recommend?
There are 100's to chose from.
This is but one example,

Chosen because;

1) Maximum wattage is rated at 450 Watts.

A computer ONLY uses the power it needs, and NO more.
Wouldn't matter if you had a 10,000 Watt power supply, (No such thing. An exaggeration), if your computer only needs 100 Watts, it would only use 100 Watts.
(Surfing the internet typically uses 100 watts)

2) Has all the power cables you'll need, and more. Tie up the power cables you do not need. (Use plastic ties, Not wire, or bread wrapper ties)

3) 24 Amperes (24A) on the 12 volt power rail.

4) 135mm cooling fan.
The cooling fan on the Power Supply you have now is 80mm.

A larger fan turns slower. Produces as much air as a smaller fan, (Or more), but makes less noise.
Less wear on the fan's bearings also.

5) Is an ATX form factor Power Supply.

6) It's 80 percent efficient, compared to the 60 percent efficient Power Supply you have now.
(That is, if it was working)

Sep 12, 2010 | HP Compaq Presario sr1010z PC Desktop

1 Answer

I have an HP PResario SR1220NX desktop that needs a new NIC card and sound card. Do they make wireless NIC for this model?

As long as you have an empty PCI slot (white) you can buy any brand wireless card or even a USB wireless adapter

Jun 10, 2010 | HP Compaq Presario SR1220NX (PJ517AAR) PC...

1 Answer

I need a new power pack (Battery) for my PC. Part

Do you mean the CMOS battery? (The little round one on the motherboard?)
In this case, you can replace the battery with a standard CR2032 lithium battery (3 volt, 220mAH rating). You get that at Walgreens, Radio Shack etc.
For how to replace the battery, take look at page 9 of the manual.
If you don't have one, you can download it here.

If you are looking for another battery, just come back here and leave a comment. I will check back and be happy to help.

Mar 03, 2009 | HP Compaq Presario SR1220NX (PJ517AAR) PC...

2 Answers

Can't reboot Compaq/Presario desktop, (power supply is working)

If the system recovery disk doesn't work it usually mans that the hard drive is bad. I would change the hard drive and use the system recovery disk on it after replacement. 

Dec 27, 2008 | PC Desktops

1 Answer

Presario 6350CA won't boot

I don't know that I'm going to be a great deal of help, but here is the link to the support site for you Presario:

Here's a link to another page on the Compaq site that specifically talks about power supply problems:

They discuss a flashing power led on this site, but I believe they are referring to an led on the power supply itself. Perhaps the led on the keyboard and the led on the power supply are both flashing...

Good luck. I hope this helps.

Dec 22, 2007 | Compaq Presario S6300NX PC Desktop

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