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mystery problem

By Daz'n'Ash ·
I have a computer that has developed a mystery problem.
The Symptoms: Random reboot for no apparent reason, this happens in various programs and when certain web sites are accessed.
Windows Media Player freezes or causes whole system lock.
When trying to go into system tools in the start menu, the computer reboots itself.

What we have tried: Stripped the mobo totally including cables, and replaced IDE cables.
Have tried a different HDD in the PC with same result.
Replaced the RAMchips (PC 100 SD RAM 128 MB)
Replaced video card; problem still remains
Have tried the HDD from the problem PC in another computer very similar to the problem one, nothing amiss, everything works fine.
Reformat HDD and reinstalled using a different CD to setup Win Me again, the problem remains.
Have replaced sound card, the problem remains.
Have run manuafturer HDD diagnostic tools, all tests pass, no faults found.
Have an updated anti virus installed and scans found no viruses.
The owners of this PC told me they had it in a computer shop to have a CDR/W installed and he said the techie who worked on it was very rough with it. When they got their computer home they soon realised that it had only HALF the amount of ram it should have. When I opened the case I saw that they had not properly seated the ram in and that's why they had only half the ram showing.

The system is only an old Intel Pentium 233 MhZ, 128 MB PC 100 SD RAM partitioned 10 GB HDD running windows Me.

Anyideas out there?
My thoughts would be they need a new mobo?

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mystery problem

by hinrgman In reply to mystery problem

I did not haer any mention about the power supply???

Try a new power supply, that sounds like your problem...

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mystery problem

by Daz'n'Ash In reply to mystery problem

Thanks for the reminder, have already tried that too. I knew there was something else to add to the list of things tried. If you have other ideas, please post them. THanks again.

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mystery problem

by jlouis45 In reply to mystery problem

also try the desktop, properties and power settings. See that it never reboots in that when the pc is not used. Also as said replace the power supply and check. Also replace the power cable.

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mystery problem

by Daz'n'Ash In reply to mystery problem

I think I already mentioned that we changed all the cables, still get the problem. Power supply was changed, the problem remained.

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mystery problem

by Pinoy_Teknik In reply to mystery problem

Bad power supply can cause system to reboot and mostly turned off.....

Use your DIgital Multimeter to find out, if the power supply can give a exact voltage for your system.

Other thing is adding more drives and peripheral can also need a higher wattage of power supply..

I hope there is no Mystery here at TEch Repbublic..that's all for now...

Pinoy_Teknik

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mystery problem

by Daz'n'Ash In reply to mystery problem

Hello Pinoy, thank you for answering my question. I have ruled out everything else and all that is left is the mobo. So now we know that is the problem, but would you know how to test the board with a digital multimeter? Please email me if you know .. tuituckta@yahoo.com

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mystery problem

by Daz'n'Ash In reply to mystery problem

OOPS! Thanks for reminding me. Tried that too, have changed the power supply and still the problem remains.

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mystery problem

by hjs In reply to mystery problem

Try reseating the CPU. It sounds to me like it is a motherboard issue but try the CPU first.

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mystery problem

by Daz'n'Ash In reply to mystery problem

Thanks, just tried that, the problem still remains

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mystery problem

by jmarchetto In reply to mystery problem

I have yet to hear anything about the HEAT. See if your BIOS lists temperatures or get a freeware program that will display the temp in your task tray (this must be board supported).

It could be as simple as that "rough" techie may have clogged some of the fans by jostling dust clumps. If so, get a can of air and spray all fans & vents.

Try running the computer with a house fan blowing on the MB. Else, buy one of many case fans or coolers available. They even make mini air conditioning units for chips now (but are $$$)!

I know some computers reboot (and not freeze) when they get too hot.

Good Luck!

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