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Intermitent boot problems

By BBD_ITAdmin ·
We are a designer of automated machinery, using PC's for controlling machine functions. We have a PC that we want to make sure that we have not hosed something up when setting it up. It is having a problem booting up, and when it does boot up it does not stay up for long. It acts as if the power is being cut then immediately restarted. It will start to boot, get through the BIOS start, get to the first scroll bar "Starting Windows", then shutdown and starts all over. After doing this several times it finally boots. You get the logon screen. Login, work for a while, or just leave it sit and it starts all over again.

Do you have any ideas of hardware tests we could try so we can rule out that it is a PC problem and not a user/setup problem. We always go round and round with PC vendors (company does not matter, Dell, Gateway, etc.). They give us the "it sounds like you set something up wrong." The OS was preinstalled. We installed machine programming software. We have worked with thismachine for 2 weeks and this started. I just read an articale about using a multimeter to check some electrical components. This problem seems like power, but someone there may have seen this before and know how to direct us down the correct troubleshooting path.

I apologize for the lenght of this question. But I want you to have all the info you may need to hopefully provide an answer.

Thank you in advance for you help and patience.

Regards,
Dennis Parr
IT Admin
Better By Design

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Intermitent boot problems

by nitemare In reply to Intermitent boot problems

Hi,

1. Check all the cabling inside and outside the machine to make sure it's all connected correctly.

2. Check that the reset or power button aren't stuck down/in a little, this happens sometimes.

3. Check the BIOS. Check if power management is on and if so, switch it off. Reboot and see if that helps.

4. If you have access to another power supply, try swapping it in and seeing if that one reboots.

5. Try pressing F8 at bootup and booting in Safe Mode. If the PC boots using minimal drivers (ie, Safe Mode) then the problem may be a bad driver (reinstall) or an incompatible peripheral.

Regards,

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Intermitent boot problems

by BBD_ITAdmin In reply to Intermitent boot problems

Thank you for your response to my boot problem question. The PC in question is an industrial PC used on a mobil testing machine we are designing for a customer. Once we have the machine built and the program debugged it goes to the customer who can place it anywhere in their facility to run the test it was designed for.

The answer you have given is one of the items I suspect may be wrong with this PC. This machine has been shipped back to the manufacturer for replacement.

As you may have experienced, manufacturers tech support are quick to call "user error" the problem and not their product quality. Since this is the second (we now have one at a customer site which is beginning to act very similar) machine of four that has had a problem like this, that along with your answer gives me the evidence I need to force the manufacturer into taking action to resolve this issue quickly.

Thank you once again for taking the time to answer my question. The best knowledge base is one bornof the experience of many.

Regards,
Dennis Parr
Design Engineer
Better By Design, LLC

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Intermitent boot problems

by darren.radley In reply to Intermitent boot problems

I had a similar problem with Windows XP on a new PC. It turned out to be faulty memory. Try putting the memory in another machine and seeing if you get the reboots.

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Intermitent boot problems

by BBD_ITAdmin In reply to Intermitent boot problems

Thank you for your response to my boot problem question. The PC in question is an industrial PC used on a mobil testing machine we are designing for a customer.

The answer you have given is one of the items I suspect may be wrong with this PC. This machine has been shipped back to the manufacturer for replacement.

As you may have experienced, manufacturers tech support are quick to call "user error" the problem and not their product quality. Since this is the second machine of four that has had a problem like this, that along with your answer gives me the evidence I need to force the manufacturer into taking action to resolve this issue quickly.

Thank you once again for taking the time to answer my question. The best knowledge base is one born of the experience of many.

Regards,
Dennis Parr
Design Engineer
Better By Design, LLC

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Intermitent boot problems

by PaulP In reply to Intermitent boot problems

Two ideas....
Are you getting clean power from the outlet you have the PC plugged into? Try plugging it into a known good outlet or into a UPS which conditions power to be sure.
Is this PC plugged into a power strip? Is there something bumping against the reset button on the power strip every so often?

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Intermitent boot problems

by BBD_ITAdmin In reply to Intermitent boot problems

This is a none issue as no power strip is used, and other PC's have been plugged into this outlet with no problems.

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Intermitent boot problems

by unixpros In reply to Intermitent boot problems

There is one more that I can think of. frequent rebooting is also caused by overheating. Check for the CPU temperature by using some of the free programs available on the net. If your system is overheating then that could be due to faulty fan or some problem with the heat sink.

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Intermitent boot problems

by BBD_ITAdmin In reply to Intermitent boot problems

Thank you for your response to my boot problem question. The PC in question is an industrial PC used on a mobil testing machine we are designing for a customer.

The answer you have given is one of the items I suspect may be wrong with this PC. This machine has been shipped back to the manufacturer for replacement.

As you may have experienced, manufacturers tech support are quick to call "user error" the problem and not their product quality. Since this is the second machine of four that has had a problem like this, that along with your answer gives me the evidence I need to force the manufacturer into taking action to resolve this issue quickly.

Thank you once again for taking the time to answer my question. The best knowledge base is one born of the experience of many.

Regards,
Dennis Parr
Design Engineer
Better By Design, LLC

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Intermitent boot problems

by rgravelle In reply to Intermitent boot problems

When I run into this kind of problem, I remove all
hardware from the machine except the video and
keyboard and load the bios defaults.I also use a
boot floppy,and let the machine run for awhile
and see what happens.If it works ok then start
adding one device at a time and keep rebooting
with floppy.You should have your bios set to boot
from floppy as first device.This way you may track
down was is causing your problem(hardware or software)

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Intermitent boot problems

by rgravelle In reply to Intermitent boot problems

I have thought about your problem some more.All
the above answers are valid.However,there are other possibilities.Your CMOS may be corupted and
the best way to check that is to remove your
battery for about 20min and re-install.Reboot into
your bios and load setup defaults.Reboot again
with floppy and wait to see if the problem is still there.If it is then you may have voltage or
temp problems.If you have a fairly new machine
then there should be a monitoring menu in your bios thta tellsyou what your voltages and temp are.They should not vary by more than 10%max.If the problem is gone, then re-install your hard drive and reboot with floppy.At the dos prompt,
type FDISK /MBR, fdisk will replace your master
boot record with the extra copy on your drive.If the problem is still there, then I would suggest
that your OS is corrupted.Also check that there is
no AUTO.EXEC or CONFIG.SYS file in your root directory. Win98 and up does not need them.
Good luck

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