Re: Computer Locks Up - bad
- From: "D.H. Cesare" <cesareDH@xxxxxxxxxxxxx>
- Date: Thu, 29 Mar 2007 09:18:44 -0600
I have isolated the system from the 1250 APC and all peripherals.
Motherboard: MSI PM8M3-V
RAM: 2 - 512MB Kingston DDR 4000
It seems you've tried to isolate any hardware issues, and couldn't find
any
that were causing this problem. You've replaced pretty much everything
you
can replace. My only thought is maybe the power supply (i.e. AC current)
is
unstable? Do you have it plugged into a reliable UPS? Give that a shot.
I
suggest APC.
Otherwise, why not just get a new computer? What kind of motherboard /
CPU
do you have in this system? What kind of RAM?
Best Wishes,
Kurosh
"D.H. Cesare" wrote:
The computer:
WinXP Pro, 2.66mHz, 1024MB RAM, primary drive 160G WD, slave drive 60G
WD,
CD-ROM/Burner, DVD burner, Acer 19" Flat Panel LCD monitor. The computer
has a 5 cooling fans total.
Started locking up once in awhile and got progressively worse over a
period
of about 3 weeks, to where it would lock up anywhere from a few seconds
after it started to an hour or so. It acted like a video card so a new
Nvidia (PNY) 256MB GeForce 6600 was installed. It still locked up.
I ran all the diagnostics on the Ultimate Boot CD, along with a couple
other
diagnostic programs for the video card and the HDD's.
The only problem found was the Motherboard temperature and the processor
temp. were too high. I changed the motherboard and the processor. The
heat
problem was fixed, (it was probably a bad sensor) but the machine still
locked up.
So I did a "clean" reinstall of WinXP Pro - it still locked up.
I hooked up a new mouse - still locked up.
I took the machine to Computer Nerdz who charged me $60 and told me the
power source was not adequate for the machine's requirements, so I
installed
a new Allied 450W power source. The machine still locked up.
The locks up from a few minutes to a few hours run time.
I took the computer back to Computer Nerdz and sat with it for 21/4 hours
in
which time it didn't lock up.
So we thought the auxiliary power supply might be the culprit, even
though
the "B" computer which is hooked to the same APS was not experiencing any
problems. I decided to completely isolate the computer from all
peripherals
and the computer room in general, so I moved the computer into the garage
where it could be on it's own circuit, and hooked up the monitor, mouse,
and
keyboard only.
The machine ran for 9 hours and then locked up. I called Nerdz and the
technician told me it was probably the monitor and to try a new monitor
cable first. I purchased a new cable and installed it - the computer ran
13
hours, then locked up.
So I replaced the new Acer monitor with my old SVGA monitor - the
computer
ran 11 hours then locked up.
To summarize:
I have replaced:
The Operating system, (clean reinstall)
The motherboard, processor, heat-sink & fan
The mouse, keyboard and monitor
The video card
I have isolated the machine from the "computer room".
I have run WD's diagnostics on both WD HDD's
I have removed the RAM chips one-by-one and run the machine on each chip
separately. Same lock-up. The chips pass the diagnostics 100%
The System Log shows no negative events; the machine has locked up 3
times
when I opened that log.
The technicians and I are at a total lose.
Someone please help.
Thank you.
*~*~*~*~*~*~*~*~*~*~*~*
It is bad luck to be superstitious.
------------------
D.H. Cesare
.
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