Re: BSOD windows...Think its video..going crazy. Done a lot of homework on this.
- From: nospam@xxxxxxxxxx (Paul)
- Date: Sun, 26 Mar 2006 03:41:49 GMT
In article <1143338266.627572.73520@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
fotoobscura@xxxxxxxxx wrote:
Hi.
I have a p4 3.6 2gb name-brand asus p5ld2vm motherboard- about one
month old. I am getting a BSOD when booting into windows. I have
tried the followiing with no success:
1) safe mode (all versions). screen comes up, goes bank (with video
signal) on loading.
2) last known good config. boots to the windows loading screen and then
goes black..video signal still being sent to the computer but no video.
3) and on that note, swapped video cards; still happens
4) swapped monitor
5) swapped out memory for known working memory. (also swapped to
different slots)
6) turned off a lot of features I had on on the motherboard-
audio/lan/etc
6) played around with PNP vs. no pnp in the BIOS
7) checked the cpu/mobo operating temperature (within spec).
8) let the computer sit to cool in case it was an hd overheating issue.
9) removed all cables to the pc but video (dvi) and usb keyboard
10) tried the db15 analog cable from the monitor to boot into a
graphical environment
and some more i'm probably missing....
There are a few things that are odd:
1) the bios acts odd and occasionally complains of over voltage or
overclocking when I boot up after changing *nothing* in the bios.
2) the bios "forgets" certain settings like "no graphical boot screen"
but will "remember" the fact that I Have a bios password.
I have tried the following software:
1) ubcd 3.3 (will crash when trying to boot into a linux kernel saying
"there is a serious problem with your bios")- but i've seen that before
with a good bios.
2) erd commander (it blue screens when going graphical)
3) memtest x89 bootable (doesn't boot for some reason)
4) original win xp cd for a restore. bsod's when I get to where it
goes graphical.
So, obviously, the problem is where it goes graphical, YET, I have
tried other video cards. Are there settings in the bios I can change?
Is the BIOS just broken? I'm having a *hard* time loading a new bios
but it seems the most logical thing.
For those that decode error messages (I don't know how to or know if
you even can) the bsod partially reads:
0000007b f78d2524 c0000034
its the same bsod hex dump every time.
First, check what revision of BIOS is required for your processor.
http://support.asus.com.tw/cpusupport/cpu_support_right_master.aspx?type=1&name=P5LD2-VM&SLanguage=en-us&cache=1
The latest BIOS is 0406 (click BIOS to see all of them):
http://support.asus.com.tw/download/download_item_nn.aspx?model=P5LD2-VM&product=1&f_name=&type=Latest&SLanguage=en-us
Asus usually has a feature called CPR in the BIOS. That is useful
for people who overclock. If you overclock the board and it
freezes or crashes before it gets into the BIOS, you simply
turn off the power, turn on the power and it recovers. The BIOS
seems to have a flag somewhere, that keeps track of whether the
BIOS POSTed properly on the last attempt. If it didn't POST properly,
then the CPR feature resets the BIOS settings.
Now, let's look at your symptoms. You are seeing an overclocking
message, and the BIOS "forgets". I think CPR is wiping out your
"no graphical boot screen" setting. (I've had this annoyance on
the P4C800-E, where my Promise disk controller settings would
return to defaults on me.) You would think as time passes, that
Asus could think up a way to just reset the CPU/Memory clocks
to default, instead of messing with all the settings.
Do you think the motherboard is stable enough to flash the
BIOS ? If it looks like it won't crash in the middle of a
session, I'd use a floppy based BIOS flashing procedure,
and move up to 0406.
By some means or another, I'd want to run CPUZ (cpuid.com)
and check the settings the BIOS is using. Just to see if
something is abnormal there. Maybe that would account for
the overclocking reports.
In terms of your testing procedure, I think I would be testing
the motherboard without a video card first. That is because the
motherboard has integrated video, and as the proud new owner of
this motherboard, you would want to prove there are no faults
in the motherboard that require it to be returned to your vendor.
When dealing with video cards (built-in or otherwise), always
remove the video driver before removing the old video card
(or disabling the built-in). Install the new video card, then
install the new video driver. There should only be
one video driver on the system at a time.
I would recommend the usual standard tests with your motherboard:
1) Memtest86+ from memtest.org . Install one stick of memory at
a time. Do two full passes error free. Using one stick, try
it in all slots. Then, install the final memory configuration
and run another two full passes error free. If you only have
a slight memory error problem, bumping Vdimm might help, or
consider returning the memory.
2) Try to get some OS running. Prime95 from mersenne.org is
available for Windows and Linux. It is a full load test for
the CPU. Selecting the "torture test" option, runs a calculation
with a known result. Again, this test should be error free.
Prime95 is one way to uncover problems with the Vcore
switching regulator.
3) While test 2 is running, you can use Asus Probe or perhaps
Speedfan from almico.com , to check the supply voltages. See
if the voltages are stable when the Prime95 torture test
starts to run.
4) Get a copy of 3DMark2001SE (or a later version if any of
them are free). In the case of integrated video, this will
stress the Northbridge as much as it will ever see in
practice. We are checking here that the Northbridge cooler
works properly. When a Northbridge heatsink is a passive,
it helps if there is some side-spill air coming from the
CPU fan to help cool it.
If everything looks good to this point, now, uninstall the
video driver for the integrated video, install the new video
card, boot and install a video driver for the new card. Repeat
step 4 and see if the card works without crashing. With
3DMark2001SE, you can leave the demo loop running overnight,
and in the morning there should still be an animation running
on the screen and sounds coming from your computer speakers.
I haven't addressed your 0000007b error. A quick search showed
"inaccessible boot device" and that can't be it. Is there any
other information on the screen to go on - a driver name,
a text string, etc ?
HTH,
Paul
.
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