Windows crash after 49.7 days
Started by gsrdemon, Feb 13 2005 05:26 PM
26 replies to this topic
#1
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
--------------------------------------------------------
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
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#14
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
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







