COMPUTER SHUTDOWN

Have you checked your power supply?

try change your video adapter to standard vga adapter see if it still shut's down by itself. I got same problem before, it fixed by reinstalled VGA driver.

I had the same problem and it turned out to be a software problem caused by a corrupted screensaver that activated at the same time as the power management settings for dropping to the standby mode. Try changing power management schemes or the settings on the screensaver.

As always , Backup , backup , backup .

PMTSHOOT.EXE
Found on the Win 98 CD in \Tools\Mtsutil\Pmtshoot\Pmtshoot.Exe

Description of the Power Management Troubleshooter Tool
This article describes the Power Management Trouble Shooter tool
(Pmtshoot.exe). Pmtshoot is a tool to assist you in identifying
the program or device driver that is preventing your computer from
entering a standby (or suspended) state. Pmtshoot monitors your
computer when it suspends, and tries to identify programs or device
drivers that may prevent your computer from suspending.
http://support.microsoft.com/support/kb/articles/q185/9/49.asp
(W98 Aug. 4, 2000)

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If the Suspend option doesn't work as it should, or you simply want
to remove the option from the Start Menu, then use this tweak.

Open your registry and find the key and value below.

Change the value of 'APMMenuSuspend' to equal '00', restart the
machine and the suspend option should have disappeared.

Registry Settings:
Key: [HKEY_LOCAL_MACHINE\Enum\Root\*PNP0C05\0000]
Value Name: APMMenuSuspend
Data Type: REG_BINARY
Data: (00 = not visible, 01 = visible)

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Standby Missing From Windows Shutdown Dialog Box .
http://support.microsoft.com/support/kb/articles/Q188/1/34.ASP?LN=EN-US&SD=gn&FR=0&qry=standby&rnk=18&src=DHCS_MSPSS_gn_SRCH&SPR=WINME

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