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When cleaning my compaq presario sr1620nx,I removed the cpu fan& everthing behind it. Now that's the only thing that works. What the heck!!?

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  • 5,660 Answers

A) Did you FOLLOW Anti-Static Procedures?

If you are not aware of Anti-Static Procedures post back in a Comment.

B) Did you bump a Ram Memory module ('Stick') loose, or more than one?

Following Anti-Static Procedures, remove all Ram Memory modules, and clean the gold plated contact pins with a pencil eraser.
There is a procedure for this; if interested post back in a Comment.

To KNOW that the Ram Memory module/s are seated correctly, and tightly; is to remove it/them, and reinstall.
This way you are Assured. Visual inspection alone will NOT do.
Plus you have cleaned the contact pins at the same time.

C) Power Supply's are evil..........
They wait until that ONE unsuspecting moment, and when your back is turned they shoot cr@ps.

At least that is the way I'm sure it appears to some people

LED's light, and fans spin?

I don't care

A) If ALL of the LED's were lit up at once, they would use less than 1 Watt of power

B) EACH fan uses 2 to 3 Watts of power

C) A typical Processor (CPU) can use Up To 130 Watts of power.
Just depends on what Processor it is.

HP Support > Compaq Presario SR1620NX Desktop PC > Main Support page,

http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&lc=en&dlc=en&product=1127351

Product information > Product specifications > Compaq Presario SR1620NX Desktop PC Product Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00472092&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=1127351

Processor (Base Processor):
AMD Sempron 3400+
(2.0GigaHertz)

Motherboard uses the Socket 939 processor socket.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00378480&tmp_task=prodinfoCategory&cc=us&dlc=en&lc=en&product=1127351

http://en.wikipedia.org/wiki/Socket_939

Cuts the list down to one..........
Palermo Core technology, and the 90NanoMeter architecture,

http://en.wikipedia.org/wiki/List_of_AMD_Sempron_microprocessors#.22Palermo.22_.28Socket_939.2C_E3_.26_E6.2C_90_nm.29

Up To 65 Watts

Static shocked?
Not much to say

Ram Memory procedure didn't do the trick?
Then suggest checking Power Supply,
Or using a temporary Power Supply.

To check is to test the 3 main voltage power rails, with a multimeter set to DC Voltage;
OR,
See if there is a KNOWN to be good, Compatible power supply you can use for a temporary test unit.

NOT stating rush out, and buy a replacement unit.
Stating test first.

For additional questions please post in a Comment.
Regards,
joecoolvette

Posted on May 05, 2013

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Marj,
Even though you said no pins were bent, my guess is that one of the pins either bent or broke off completely.

I am assuming that since you were inside cleaning, the computer is out of warranty.

Try examining the CPU (thingy under the fan) for any bent pins or broken pins. The alignment back into the mother board is crucial. Usually there is one corner with no pin or the corner is squared off to indicate the positioning of the chip in the pin holes.

Reseat the CPU and make sure it goes all the way down flush to the motherboard.

Usually there is a lever beside the CPU that you can lift that makes it easy to install or remove the CPU. It is called a Zero Insertion Force (ZIF) lever.

Personally, I'd recommend a professional or very knowledgeable and experienced friend help you reseat the CPU. Otherwise, you will need to replace it and they are not cheap.

However, if the CPU is damaged beyond repair, you might find a good USED one online at a decent price.

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This sounds like a problem on the motherboard. This can be determined quickly buy most technicians. Be certain you are using a good voltage regulator. This is common problem if there are voltage spikes. Happened to me.

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SOURCE: Cpu Models to upgrade Compaq Presario sr1920nx

CPU/Processor

  • Socket: 939
  • Supports the following processors:
    • AMD Athlon 64 X2 up to 4800+
    • AMD Athlon 64
    • AMD Sempron
CPU/Processor
  • Socket: 939
  • Supports the following processors:
    • AMD Athlon 64 X2 up to 4800+
    • AMD Athlon 64
    • AMD Sempron
CPU/Processor

  • Socket: 939
  • Supports the following processors:
    • AMD Athlon 64 X2 up to 4800+
    • AMD Athlon 64
    • AMD Sempron
Cpu/Processor Type
Socket: 939
  • Supports the following processors:
    • AMD Athlon 64 X2 up to 4800+
    • AMD Athlon 64
    • AMD Sempron

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SOURCE: powers up and cpu fan is racing but no boot,

This may be due to a CMOS mother board battery. I know that some tech or expert say that you can still boot without it but my experience is that if the CMOS battery is below 3.4 volts it may or may not post or boot. This battery is about the size of a quarter usually found at Walgreens or Walmart for about 3.00 dollars.

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Marj,
Even though you said no pins were bent, my guess is that one of the pins either bent or broke off completely.

I am assuming that since you were inside cleaning, the computer is out of warranty.

Try examining the CPU (thingy under the fan) for any bent pins or broken pins. The alignment back into the mother board is crucial. Usually there is one corner with no pin or the corner is squared off to indicate the positioning of the chip in the pin holes.

Reseat the CPU and make sure it goes all the way down flush to the motherboard.

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