windows xp in endless reboot cycle

Hi guys.

I have a machine in an endless reboot cycle. As soon as windows xp starts loading the desktop it reboots.
I have tried different memory and I have ran a memory diagnostic on the machine. The memory is fine.

There have been no hardware changes recently.

It is a P3 motherboard. The chipset is Intel , but unsure of the actual CPU. Anyway I am getting a post error one long beep and 2 short ones. What could this be ?  It is not memory as when I took the memory away the post error was completely different.
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WEINBERGERAsked:
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muhalokConnect With a Mentor Commented:
Thats easy:

http://www.pchell.com/hardware/beepcodes.shtml

according to this link - you have a VGA adapter problem - try replacing it.

Good luck.

NOTE: Besides that, once you set up your computer, go to:

My Computer (right click) -> Properties ->Advanced -> Uncheck the automatic reboot option. This way, you would get a blue screen instead of reboot of the PC and there sometimes you can see the error that happened and caused system crash.

Another thing is to enter safe mode - it loads a built-in VGA driver, that sometimes is able to work with a faulty video card, in a low resolution/color modes.

Good luck again.
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capricorniousConnect With a Mentor Commented:
Hi,

I Have had a similar problem in the past.  It was caused by the paging file somehow dissapearing.  It could be down to a dodgy harddisk or corruption in windows.  Without virtual memory (Paging file) the machine will boot but as soon as it loads Explorer the machine will reboot.

Check out more information on this at Microsofts Technet.   www.technet.com
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WEINBERGERAuthor Commented:
Perhaps but still does not explain the post error.
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capricorniousCommented:
What is the post error you recieve?
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XSINUXConnect With a Mentor Commented:
Definitely the Memory. Try with only one STICK of Memory and see if it reboots.

Also See if you can go to the safe Mode and  then you may do the following.

Disabling the “restart on system failure” feature may permit the exact cause to be isolated: Right-click on My Computer, click Properties, click the Advanced tab. Under “Startup & Recovery,” click Settings. Under “System Failure,” uncheck the box in front of “Automatically restart.”


For additional help you may try this link
http://aumha.org/win5/a/shtdwnxp.php\

Hope it helps

Cheers
Sinu


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tomvergoteConnect With a Mentor Commented:
and at what point in time do you get the post error?
after showing vid card info, after counting memory, ...
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WEINBERGERAuthor Commented:
Yes I can get into safe mode with no problem.

I have tried with different memory sticks and a single memory stick. I have also run a memory diagnostic program which indicates the memory is fine. I have also to be sure have installed the same memory in another machine , which is fine with it. So I do not think it is memory, although I agree that was my first reaction.

The machine does boot despite the intial post error and I can boot into safe mode. I am leaning towards a corrup driver or something to that affect what are your thoughts ?


I am busy loading windows xp with a second harddrive I have installed. So far everything seems to be OK.Initially I was planning on cloning the drive but as the original seems to be given trouble I have decided to do a fresh install with the new drive. If that fails then I will start considering hardware again , but so far so good. According to windows I have 8 minutes left to go.
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nobusCommented:
if you post the motherboard model, we could look up the bios error codes
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WEINBERGERAuthor Commented:
OK motherboard model is s58 m but still unsure of brand.

Windows XP installed successfully on new harddrive. No rebooting or anything. Indicates there is a driver conflict on the original drive , do you guys agree ?
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WEINBERGERAuthor Commented:
I still get the error codes when booting , but still boots fine so I am not too worried about it at this stage.
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nobusConnect With a Mentor Commented:
i suppose s58 m is NOT your motherboard, use this to identify it :

http://www.lavalys.com/products/overview.php?pid=1&lang=en&pageid=1      Everest free
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mugman21Connect With a Mentor Commented:
The worm MSBlaster caused this type of behaviour on win XP, although the worm is not as common now, it is still out there. Had a machine last week infected with it, and it of course went into this endless reboot cycle. If you can get this machine into safe mode with networking, update the virus signatures and preform a full system scan.

Mugman
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capricorniousCommented:
Have a look on the drive you removed and see if the pagefile is existent on the C drive, or wherever it was located
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WEINBERGERAuthor Commented:
I think I have discovered the problem. My client informed me that he had downloaded Service Pack 2 when this problem occured which I was unaware of before. I helped him reinstall windows about 6 months ago and told him that he needed to activate it. I think he used his son do provide a hack, which SP2 does not like.

Mugman , from my experience the blaster virus was internet related and causes your machine to reboot after you log on to the internet , usually with a 60 second warning. Although if your machine was connected to an ADSL line it would have been a possibility, but thats not the case.

Nobody came up with the solution , but all your suggestions were viable and helped me get to the conclusion , besided I  got some more resources from suggestions like nobus. For all your efforts I will be splitting the points.
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WEINBERGERAuthor Commented:
Muhalok , thank you I only saw your post now. I also thought VGA and still do , however the screen is working fine. All the colours are there , no distortion. The machine is working normally , just gives the post code when starting up. I am leaving it like that as there does not seem to be any problem.
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XSINUXCommented:
The SP2 may be taking more of your ram hence the problem.
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snickeredConnect With a Mentor Commented:
You can get into safe mode, but not normal mode?  That would almost definitely mean a software problem.  And the fact that you are rebooting without warning probably means that you have "automatic restart" checked on "system failure."  You should go into safe mode and disable this "feature."  Then take a look at the BSOD that you are getting.  You will probably find there is a driver conflict/failure.
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XSINUXCommented:
check my previous comment on how to go about this then !
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