Re: Computer wont' boot
- From: Paul <nospam@xxxxxxxxxx>
- Date: Tue, 04 Oct 2011 06:46:59 -0400
Metspitzer wrote:
On Mon, 03 Oct 2011 17:24:32 -0700, "Nobody > (Revisited)"
<usenetharvested@xxxxxxx> wrote:
On 10/3/2011 3:23 PM, Metspitzer wrote:AMD Athlon II X3 445 Rana 3.1GHz 3 x 512KB L2 Cache Socket AM3 95Whttp://imgur.com/NMk1JI have my usual gripe first. You didn't give enough info to work with.
My niece brought her computer to me. She had been having trouble. She
said the machine would sometimes not beep (POST) when she turned the
machine on. If it did not beep it would not come on. She said that
most of the time the machine would beep and it would work, but the
times it did not beep she could restart the machine and it does not
come on.
The link is what a screenshot of what I saw the first time I turned
the machine on. She said that this message has just started coming up
and it won't start at all. I opened the machine and it looked like
the wires from the fan were pinned behind the CPU fan. I took the fan
off the CPU and cleaned it and re pasted it and put it back on, but I
don't think that was the problem.
When I turned the machine on the WinXP logo started. Before it booted
the screen went blank. Now when I turn on the machine, it beeps but
the green ready light on the monitor does not come on so there is no
monitor output. She says I can try later and it will work again.
Suggestions?
Thanks
At a minimum...
#1 Computer (or motherboard) make and model
#2 CPU make and model (or at least speed/core count)
#3 Operating system
Triple-Core Desktop
http://www.newegg.com/Product/Product.aspx?Item=N82E16819103872
ASUS M4A785TD-M EVO AM3 AMD 785G HDMI Micro ATX AMD Motherboard
http://www.newegg.com/Product/Product.aspx?Item=N82E16813131406
Kingston HyperX 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333 Desktop
Memory (CAS7) http://www.newegg.com/Product/ProductReview.aspx?Item=20-104-154
Running XP
Paul helped me pick them out.
Actually that is a lie. Paul put his finger on them and I ordered
them.
Past that, RAM, HD, video etc help but not absolutely needed, unless some of these are tied to the symptoms/problems. If it's video, incude that in the minimum.
This line from the screenshot is bizarre:
"New CPU is inserted in your system!"
The following "enter setup" line does make sense in that BIOS is seeing something different that really should be confirmed or configured more in SETUP. Did you do that?
I do have a weird idea of a possible, but it's just a guess. Don't even consider it truth unless it proves out.
So here goes:
The CPU probably overheated from what you described and was damaged.
Somehow the CPU still functions well enough to intermittently run POST and show the BIOS screens, even get to the Windows logo on boot. This isn't a normal fail mode for CPUs, but I have seen it happen.
The Guess:
A core died. Not knowing more about the CPU and motherboard, I'm guessing that the motherboard saw one less core and declared "This ain't the CPU that was installed!" "You changed it!" "Set it up!"
This isn't the only possible, without sufficient info I'd suspect the power supply as well.
I went in and tried the machine again. The first time I tried, the
computer beeped, but the monitor light never changed from orange which
means there was no video output. (It has always beeped when I tried
turning it on even when it did not boot)
I turned the machine back off and tried again. It booted, but it
didn't give me the screen about the CPU changed. I got the screen
that says.....windows did not start last time and I picked safe mode.
(Will safe mode use all 3 cores?)
It has booted into safe mode fine so it is still broke but I don't
know why. The way my niece talks............as long as I don't turn
it off, it will run forever.
Any suggestions on how to find out what is misfiring? Is there a way
to check the Chip?
The CPU is still under warranty. I bought it from Newegg. Is the
intermittent problem I am having enough grounds to have the chip
replaced? What happens if I send the chip back and it turns out to be
something else?
I bought 2 of these exact mobo and chips so I do have another CPU I
could try, but I live in Georgia and the other machine is in Alabama.
It would also be a pain to talk my nephew into letting me use his
machine for testing.
Actually, with that motherboard, there is a way to get "another CPU detected".
A flaky DMI/ESCD isn't the only way.
The motherboard supports ACC, which can be used to unlock a core. When
they make a quad, they may have yield problems, and they turn bad
quads into good triple core processors, if only one core is defective.
ACC allows that process to be reversed by the end user.
http://en.wikipedia.org/wiki/AMD_700_chipset_series#Advanced_Clock_Calibration
The invention of ACC, available on some 700 series Southbridges, somehow
allows a core that was locked out, to be unlocked. You have to then
test the CPU, to make sure the (new, extra) unlocked core is stable. When
they lock out a core, it means you can't really be sure it's good, and
it needs to be tested.
Enter the BIOS, and verify that the ACC function is turned off, to give
you the best odds of a properly working triple core.
The manual shows "Advanced Clock Calibration" and the default value
is [Disabled]. And that would keep an X3 triple core processor,
running as a triple core. Only attempt to turn on potentially defective
core(s), if you're prepared to test them.
*******
You can also try "clearing CMOS" with the jumper, and setting up the BIOS
again. At least, if you know what the settings are supposed to be. If you
don't know what to switch on or off, you might have a bit of fun getting
everything tuned up again.
Using the "Clear CMOS" jumper should only be done with all power removed.
I recommend pulling the plug on the computer just to be safe. Otherwise,
some motherboards are designed to burn the power ORing diode for the 3 volts
feeding the RTC. Once the clearing of the CMOS is complete, plug in, and
enter the BIOS by pressing <Del> on an Asus motherboard. There, you'll find
all the settings. A typical pretty important setting, is IDE/AHCI/RAID
for the boot disk, as failing to match that setting properly, may result
in the OS not being able to boot (i.e. driver mismatch, repair install etc).
One purpose of clearing CMOS, is to remove bogus values from the 256 byte
CMOS RAM. Sometimes, that can cause very weird symptoms on a motherboard.
And then, people will recommend a "clear CMOS" as a Hail Mary kinda move.
*******
Post back how it goes...
Paul
.
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