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PC Gateway Desktop shuts down without error after 15 to 20 min of operation from CD-Rom. The issue does not seem to happen during defrag operation or during diagnostic tests.

Original issue was invalid OS so I reinstalled the OS (clean) and performed all updates. Sometimes system shut down during updates but as long as I kept the mouse active. Then I replaced the 300 watt power supply with a 750 watt one I had from a newer PC. Currently defragging system with no shutdowns yet. Diagnostics did not show any issues with CPU or memory. Some tests failed but unsure which they were. I suspect maybe a CD-Rom or Hard drive issue. No apparent issues with onboard sound.

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I would grab a bootable iso like knoppix or something and boot with the opticalrom and do a memory test. then after the 9 tests 1 pass if there was no issues boot cd and just use it to browse the web or move some file s around and look at the dmesg in the console see if there are any complaining errors like I/O read errors or something to tell you whats wrong or what it needs.

I would play a movie over and over on it to get it hot see if that makes a issue then soon as it shuts down I would repeat the memory test. if it gives errors you might have a funny memory . if nothing then I would clean out the fans.

let us all in on your results!

Posted on Mar 23, 2014


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SOURCE: operating system lost

Reset your HD. Uplug all the cables connected to it and then plug them back in. Then try to boot from you xp cd. Let me know how it goes.

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SOURCE: Blue Screen Issues

Since you are using Dell Dimension 9100 ran a memory diagnostic for the blue screen. If you have 2 memory modules ,try reseating memory module and using 1 memory module to boot the system and then try to reinstall OS. If issue persist then replace memory with a different memory module, boot the system using dell resource cd or create bootable cd in DOS. DO a DEBUG follow the document from Dell support .
The using windows XP reinstallation cd try to reinstall OS.
Try the DEBUG as the last option.Good Luck.

Posted on Aug 19, 2009

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SOURCE: Computer will reboot on Virus/Spyware scan at

The weak airflow from the power supply unit (PSU) is suspect. Virus / Malware scanning is a disk and processor intensive operation - resulting in greater load on both. Increased load translates to heat. Check to be sure that the processor (CPU) fan is running, too. An overheating PSU and CPU can cause all types of problems.

Are you using a genuine XP install disk/image or a disk of questionable origin? Use of bogus OS disks is "asking for trouble".

If your system BIOS or set up (accessed during boot) allows, try to located the page that displays component temperatures and fan speeds. Check this immediately after rebooting from a an unplanned shut down - if unable to locate this set up page, download HWMonitor at:

It is a free program - choose the 32 or 64 bit version. Note fan RPM and CPU core temps to help determine where heat is coming from - or which fans aren't operating correctly.

Posted on Sep 18, 2009

Testimonial: "Good information but problem still exists. Looking deeper."

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SOURCE: Gateway GT4022 has issues powering up and restarting

1.Yes the Power On switch is okay.
(PS. If you hold down the Power On button for 10 seconds on any computer, it will turn off)

2.The heatsink held down by springs on the Northbridge, and Southbridge chipsets, is an excellent idea. Works very well on Processors too.

My opinion.

1.This means even pressure is being distributed, and in a manner that a user can't cause harm to the chipsets.
Use screws, and you might have someone who puts too much force, while torquing them down.

2.Means to me that the user can remove the heatsink, clean the top of the chipset, and bottom of the heatsink, and apply new thermal paste.

Thermal paste does dry up over time.

[I'm sure you're aware, but please indulge me.
The top of a chipset, or processor case, and the bottom of a heatsink, is not perfectly smooth.

There are microscopic hills, and valleys, and pits.
These cannot be seen by the naked eye.

These voids cause an air pocket. Air is an insulator, not a conductor. You want a conductor to help transfer the heat from the chipset, to the heatsink.

Thermal paste fills these voids, and is an excellent conductor of heat. Helps transfer the heat.

If your Northbridge, and Southbridge chipset have thermal pads, I suggest taking them off, and flying them out the window!
(Look out below!!!!)

Thermal pads do not transfer heat very well]

As for your problem, it's the power supply.
Inside the power supply are Electrolytic Capacitors.

Some are used to filter the incoming AC electricity, Input Stage), and some are used to filter the outgoing DC electricity. (Output Stage)

Electrolytic Capacitors used in personal computers have a cylindrical aluminum case, with two terminals coming out of the bottom.

The aluminum case resembles an aluminum Coke can, with the bottom cut out.
There is a rubber round plug in the bottom.
The top of the 'can' is flat, and has an X or a lK, cut into it part way.

Inside the 'can' are three thin strips.
1) A Conducting strip of metal

2) A Non-conducting strip. Is made of metal with a non conducting oxide layer. (Insulating oxide layer)

3) A strip of paper soaked in Electrolytic Paste.

The Positive terminal is connected to the Conducting strip, and the Negative terminal is connected to the Insulating strip.
(Metal strip with insulating oxide layer)

Electrolytic Capacitors break down over time. The designer has taken this into effect, and puts in capacitors that are 50% better than required.

Problem is, that a large number of capacitors have a bad Electrolytic Paste formula. This formula was stolen from a large capacitor manufacturer.
Unknowingly the thief stole a bogus formula.

The Electrolytic Capacitor manufacturer caught wind of the approaching theft, and a known bogus formula was substituted for the real one.

The Electrolytic Paste of this bogus formula, develops gas after time. (Hydrogen gas)

This causes one of two things, or both.

A.The gas expands inside the capacitor, and breaches the seal of the capacitor.
(Pops the rubber plug loose at the bottom)

B. The X, or lK shape at the top of the capacitor breaks open. (The shape is etched into the flat top of the capacitor, about halfway)

Electrolytic Paste is slowly pushed out of the capacitor. Either through the break at the top, the rubber seal at the bottom, or both places.

Some paste loss will make the capacitor weak. (Loss of capacitance)
Too much paste loss will make the capacitor fail.

Electrolytic Paste also dries up.

When you have one, or more weak capacitors in a power supply, you have a weak voltage power rail.
When you have one, or more failed capacitors in a power supply, you lose a power voltage rail.

There are three main voltage power rails, in a personal computer power supply.
A) The 3.3 Volt rail
B) The 5 Volt rail
C) The 12 Volt rail

A capacitor builds a charge up slowly, then releases it all at once.
Compare this to a swimming pool that is filled up slowly with a garden hose, then knock a big hole in the side. The water rushes out all at once.

I believe you have a bad power supply. One, or more capacitors are failing. When you unplug, wait 15-20 seconds, then plug back in, you are causing the weak capacitors to get a surge of electricity.

I Do Not advise opening the power supply to take a look!
Electrolytic Capacitors hold a charge for weeks, sometimes months, after being disconnected from power!

(Sometimes up to a year for the big capacitors. Such as the one's used in the Input Stage, of the power supply)

If your fingers make a circuit by touching the two terminals of a capacitor, YOU will receive the charge!

If your fingers touch a circuit, in the circuit board of the power supply, where one, or more capacitors are in, and your fingers complete a circuit, YOU will receive the charge!

This can result in a bad to fatal shock.

An experienced tech, will use the proper method of discharging the capacitors, before working on the power supply. I will not detail it here.

(If someone tells you that you can use a metal screwdriver to do so, this = NO!
The tip of the screwdriver can melt, and turn into hot shrapnel, as the capacitor explodes!)

Seasoned tech's just use a spare power supply, for a test.

Approximately 70 or more percent of the computers that come to my shop have a failing, or failed power supply.

Most are due to the inside of the computer, and the power supply, is dirty.
The owner never took the time, or was afraid to clean the inside of their computer. (And power supply)

All they had to do was unplug the computer from power, open the computer case, touch the metal frame of the computer case to relieve their body of Static electricity, and use a can of compressed air for computers.
That's it!

The rest of the power supply failure, can be attributed to the computer manufacturer. They used cheap quality power supplies, that had cheap quality components inside. (Like Electrolytic Capacitors with the bogus formula, for one)

Saved the computer manufacturer money.

At the outset of this, you better check the Electrolytic Capacitors on your motherboard.

Gateway didn't use solid capacitors, when the FIC KTBC51G motherboards were made.
Gateway used Electrolytic Capacitors.

Visual signs of capacitor failure,

Posted on Dec 24, 2009

Testimonial: "Thanks for info. able 2 borrow known good coolermaster 430W ps. no change, so i fear mb is shot. will use ur info to examine mb next."

  • 1 Answer

SOURCE: Gateway GT5220 PC desktop boot issue.

This is Nvidia's dreaded video chip cold solder joint problem. I have fixed many of these in my shop. Two choices, get it fixed or buy a new motherboard.

Posted on Feb 21, 2010

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