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Advanced PC Problem

By Michael34 ·
Hello,

This is the situation, The person whom's computer I am attempting to repair had windows 98 SE installed, and kept getting several errors and blue screens, so I upgraded to Windows 2000. Once the setup was done, I decited to install SP3, which I had things to do, so I started the setup process, and when I came back it was blue screened.

When I proceeded to turn on the PC once more, all that happens is the Yello HDD Light and Power light come on solid, then after 30 seconds the HDD LED goes dark. The Monitor gets NO signal and remains in standby mode. I thought it was the monitor at first, but the monitor is a known working one. Anyways I removed the Hard Drive thinking it may be causing problems, but it was not.

I noticed the system was very very hot, so I called the person and found out that this PC, had been running for about a year with NO fan, only a heatsync on the Processor, which would explain the error messages in windows 98.

To confirm this (Before it went dead) I was unable to install anything, the setup would lock up, so I put a fan by it, and it would do setup and thats how I got windows 2000 setup on it).

Now what could have gone out, to make it where I get nothing when the power is turned on? The monitor is getting a signal, but remains in standby, but if I take the Monitor cord off it says "No Signal Detected", and the monitor works fine with other systems.

I also replaced the Video Card, and still nothing. Any clues????

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Advanced PC Problem

by TheChas In reply to Advanced PC Problem

The monitor is not necessarily getting a signal. When the PC is off, but the cord is connected, the monitor goes to sleep.
When you disconnect the video cable, the monitor senses the change, wakes up and then determines that there is no signal.My first suspect is the CPU.
1 year without a fan, and system errors. The only question was when would the CPU finally fail.

If the CPU checks okay, it could still be heat damage. The CPU socket, voltage regulators, even the chip-set.

Depending on how the CPU failed, it could take other parts out with it.

Chas

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Advanced PC Problem

by Michael34 In reply to Advanced PC Problem

Could you please read my comment and let me know what you think? You can also email me at: Michael34@bak.rr.com
Thank You for the help

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Advanced PC Problem

by opatzg In reply to Advanced PC Problem

You never did say what kind of processor it was or how old the machine is. Old pentium p75/90 someimes only came with a heat sink but best bet would still be new processor with heat sink and fan. May be better off upgrading if an atx case to something much faster.

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Advanced PC Problem

by Michael34 In reply to Advanced PC Problem

The Processor is an AMD 850 Mhz. The PC is around 2 years old and was made by HP. To be honest the pc is very small, and even with the fan they provided, I don't think that it would be enough to keep all the heat from the heatsync from damaging the system.

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Advanced PC Problem

by Michael34 In reply to Advanced PC Problem

The Processor is an AMD Athlon(tm) Processor 850 which has one huge heatsync on it.
Thank You for the help

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Advanced PC Problem

by dragononedon In reply to Advanced PC Problem

When the CPU overheats it's not only the cpu that gets ruined. Sometimes the mother board and or other components.
Try using a different cpu in it (Of course with viable fans working) and see if the system boots. if not then your motherboard is shoot as well as the cpu.

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Advanced PC Problem

by Michael34 In reply to Advanced PC Problem

Yeah, I know its a bummer, Could you please read my comments and let me know what you think????
Thank You for the help

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Advanced PC Problem

by CG IT In reply to Advanced PC Problem

It's trial and error to try and troubleshoot problems at the hardware level without a POST card. TheChas is the man for hardware level stuff and I'll give on suggestion. Visually inspect each component for scorch, discoloration marks, leaky capacitors. Then if you have known good items that match those in the computer in question, start replacing each component with a known good one. If you've replaced the processor, memory, video, Hdd will all good known parts and still have a problem, chancesare it's the mainboard.

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Advanced PC Problem

by Michael34 In reply to Advanced PC Problem

Due to the way HP designed this model, I am unable to get directly to the system board, however I did inspect everything I could see, and found no apparent damage, Could you please read my comment and let me know?
Thank You for the help

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Advanced PC Problem

by fred07 In reply to Advanced PC Problem

I agree with all above and add info.
Most of the MMX technology cpu's did not have fans. I have many 233mghz without fans and they atill are FINE. Cleaning upkeep is more of a problem or missing mouse covers.
Know that an overheated cpu does and will damage the MB very fast and for sure.
A power supply fan is very necessary in old units as they were designed for air flow cooling for the entire unit.
No one mentioned the power supply may be going bad and that is the only thing I would further check before the unit became cannon fodder. Especially if this is an older unit.
If this is an older unit it would not explain the error messages on any OS due to lack of any fan or heat problem.
I would install Mother Board Monitor and use it. A new MB bios has all that info in the bios.
Hope this helps.

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