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Windows crash after 49.7 days


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#1 gsrdemon

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Posted 13 February 2005 - 05:26 PM

One of my friend has sent me this info

--------------------------------------------------------
Windows crashes automatically if you don't switch off the machine for
49.7 days.This is accepted by Microsoft.

Do you know why?

In windows the Virtual Machine Manager(VMM) is responsible for
creation, execution, monitoring and termination of virtual machines. This VMM is a
32 bit protected mode operating system, provides a number of system
service at chip level of programming.

One of these services is "Get_System_Time". This particular service
loads the EAX register with the time in milliseconds since Windows
started.This service is accurate to 1ms.

EAX is a 32 bit register. So the maximum number of milliseconds it can
hold is:

(2^32) - 1 = 4294967295 milliseconds
= 4294967.295 seconds
= 71582.79 minutes
= 1193 hours
= 49.7 days

So after 49.7 days the EAX resets to zero.Most of the Drivers use this
Time Service to keep track of the time out of various services they
provide. So after 49.7 days the drives cannot use the Get_System_Time
funtion of VMM and they crash.

"SO DO NOT KEEP YOUR MACHINE ON FOR MORE THAN 49.7 DAYS. IT WILL NOT
ONLY CRASH BUT MAKE A BIG HOLE IN THE POCKET(THE ELECTRIICTY BILL)"
----------------------------

Information source

#2 tinkupuri

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Posted 13 February 2005 - 06:04 PM

thanks for informative post....

nice i like the way of copy and past....(Jokin) ;)

#3 Bourne

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Posted 13 February 2005 - 06:43 PM

Thanks for the info :lol:

#4 Integrated System

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Posted 13 February 2005 - 09:35 PM

DO NOT KEEP YOUR MACHINE ON FOR MORE THAN 49.7 DAYS

I restart my computer after every 5 or 6 hours :D

#5 Siraka_Serion_Semi

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Posted 14 February 2005 - 10:35 PM

Interesting fact

#6 elositocandela

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Posted 15 February 2005 - 12:55 AM

lol i only had keep my computer one for 8 hours maximum

#7 cmkumar2k

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Posted 15 February 2005 - 03:30 AM

O ho...... mmmm.... thanks for the information dude.

#8 gsrdemon

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Posted 15 February 2005 - 04:25 AM

how are the win servers running for months & years continuously without a failure ?

#9 Bourne

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Posted 15 February 2005 - 07:51 AM

how are the win servers running for months & years continuously without a failure ?

Maybe there made to run for longer periods of time ;)

Or you can just use Linux, Unix or a Mac :)

#10 gsrdemon

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Posted 15 February 2005 - 11:02 AM

how are the win servers running for months & years continuously without a failure ?

Maybe there made to run for longer periods of time ;)

Or you can just use Linux, Unix or a Mac :)

bourne.. I need a clarification :)
Does anyone know why??????

#11 AppleXY

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Posted 15 February 2005 - 11:08 AM

i'm running a mac, (under UNIX), UNIX is an advanced operating system like LINUX as you hav might have heard, they can run a long long time w/o crashing! Thats I use a mac! :D

#12 Flash848

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Posted 15 February 2005 - 01:13 PM

how are the win servers running for months & years continuously without a failure ?

May be they do a reboot after every month

#13 gsrdemon

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Posted 15 February 2005 - 01:29 PM

May be they do a reboot after every month

May be.... :blink: !

#14 ReynoldsM

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Posted 18 February 2005 - 04:02 AM

To avoid this automatic shutdown, technicians are required to restart the system manually every 30 day.
More on Bink's website

Read it on Cnet also:
Windows may crash after 49.7 days
Readers react to 49.7-day Windows glitch

#15 Liquid Snake

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Posted 19 February 2005 - 06:49 PM

Thanks for the information. I didn't know about it :whistle:

#16 r22pl

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Posted 27 February 2005 - 07:13 PM

Yeah thanks, i didnt know either

#17 ubergeek

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Posted 07 March 2005 - 04:54 AM

does this apply if i hibernate? the computer is powered off, but all memory is saved and restored when the computer is powered back on again. so when i cumulatively have had the computer on (and when off, hibernating) for 49.7 days, will it still crash?

#18 Sushee XP

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Posted 07 March 2005 - 07:09 AM

does this apply if i hibernate?

I regularly use the hibernate feature, didn't think about it :o

#19 Flightlessfalcon_no_limits

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Posted 07 March 2005 - 07:32 AM

WoW that's interesting, shows how crap windows is compared to other OS's :P ;)

#20 Aqua Structure

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Posted 08 March 2005 - 11:30 PM

I highly doubt that I would be leaving my computer on for 49.7 days anyway... I generally restart at least once every two days.

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