new system crashes after BIOS

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Hey everyone,

I just registered here since I've been putting my own computer
together and have run into a few problems. I didn't know whether to
post here or in the troubleshooting section, since this is a
"Do-It-Yourself" problem, so I apologize if this is in the
wrong forum. Anyway, to the point...

After the computer comes on, it puts an image on the screen like it's
loading and detects the ram, the hard drive, the
processor, etc. but after it goes to the next part, it just kicks

This happens everytime I boot it now. One thing I noticed was that
just before it kicks off, it gives me a message, saying something
about an overclocking error or a voltage problem, and to adjust my
bios settings, but no matter what I do, it won't let me into BIOS. I
hit Delete right as the computer boots up and it acts like it will
let me in, but it always turns itself off....I'm stumped as how to
deal with this. Any ideas?

Correction: I managed to get into BIOS one time but it turned itself
off still, even as I was sitting there looking at the screen.

Re: new system crashes after BIOS

On Mon, 03 Apr 2006 04:31:17 GMT, no@spam.invalid
(valhariel) wrote:

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What is the "etc"?  These details are kinda important,
"maybe", to know exactly when it turns off.

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So it turns completely off, not just resetting and trying to
boot again?  It seems you mean this but I'm just clarifying.

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It would be good to know the exact message.  Do you mean
both of those messages or only one of them?

My initial impression is that your power supply isn't
keepign the voltage stable, and the bios has a threshold
that is a safety feature, turning system off.  That is a bit
unusual for some systems but you didnt' mention the parts.

Please provide a concise but complete list of all the major
hardware in the system such as the board, drives, CPU, video
card, memory, power supply.  Makes and models of each,
especially the power supply, are good to post at the
beginning of any problem (usenet post).

Do you have a multimeter you might use to take psu voltage

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Check the motherboard manual to confirm that <DEL> is the
correct key to use to enter bios.  Then try clearing the
CMOS- unplug the AC and use the jumper, and/or pull the
battery for 10 minutes (AC power still disconnected).

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Other types of bios shutdown mechanisms include CPU overheat
or fan failure (no RPM signal or RPM signal is too low for
the board to register accurately).

If all else fails, strip the system down to bare essentials:
CPU, video, 1 memory module, heatsink/fan, then try to turn
it on.  Leave drives, other cards, and keyboard/mouse
disconnected.  If system stays on, add back keyboard and
enter bios menus, go straight to the Health (or hardware)
monitor page immediately to check the temps, voltages, fan

Re: new system crashes after BIOS

As of right now, the processor, ram, video card, hard drive, and sound
card are all plugged in...i also have a keyboard and mouse. i decided
to leave the dvd drive unhooked till i get the rest of this figured

I got to thinking that maybe the heatsink was mounted correctly so i
redid that, then tried to turn it on again today, the same thing

And yes, the machine turns itself completely off. No reboot or
anything...I can turn it on again with the power button but it just
goes off again..

Here is a detailed list of all the stuff that's in it...

COOLMAX CX-450B (Black) ATX 450W Power Supply
COOLER MASTER Centurion 5 CAC-T05-UW Black Aluminum Bezel, SECC
Chassis ATX Mid Tower Computer Case
ASUS P5WD2-E Premium Socket T (LGA 775) Intel 975X ATX Intel
CORSAIR XMS2 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
Unbuffered Dual Channel Kit System Memory Model TWIN2X2048-6400
Intel Pentium D 920 Presler 800MHz FSB LGA 775 Dual Core Processor
Model BX80553920
PLEXTOR 16X DVD±R DVD Burner Beige IDE Model PX-740A-BP (Currently
Western Digital Caviar SE16 WD3200KS 320GB 7200 RPM SATA 3.0Gb/s Hard
SAPPHIRE 100154L Radeon X1800XT 256MB GDDR3 PCI Express x16 Video
Creative Sound Blaster X-Fi XtremeMusic 7.1 Channels PCI Interface
Sound Card

I don't have access to any serious testing equipment though, so I'm
limited in my resources. Sorry I can't provide more info.

Re: new system crashes after BIOS

On Mon, 03 Apr 2006 19:32:56 GMT, no@spam.invalid
(valhariel) wrote:

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Nothing stands out as problematic but I'd wonder if that
Coolmax PSU has sufficient 12V current capability for the
system.  If you had a spare PCI video card, I'd suggest
removing the X1800XT and swapping it in to reduce power
consumption (temporarily).  Also unplug ALL drives, they too
pull a couple amps total.

Re: new system crashes after BIOS

the cpu may be getting too hot, and that's turning off
the system to save the cpu.

I'd remove the heat sink from the cpu, and
then reseat it.  Be sure you don't have the heat
sink on backwards.  I'm assumming the fan on
the cpu is working.

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Re: new system crashes after BIOS

Well, guys, I found out the trouble...apparently, the stock cooler
doesn't fit on the processor that well and there was a slight gap in
the connection wasn't soaking up enough heat, so whenever
I'd turn the system on it'd climb sky high, upwards of 85 celsius
then kick off....I went in the box and readjusted the heat sink,
making sure to apply ample force to bridge that gap....after that, I
was idling at about 45 celsius, quite a bit of difference. No more
problems now, except that ASUS Pc Probe II keeps giving me an IO
install error, but that's no big deal. Thanks for the help everyone.

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