Vista - Stopped Resuming from Sleep or Hibernation - Used to Work

I help a small non-profit private school by providing them with free
PC support. One of their computers no longer will resume from sleep
(S3). It used to work fine.

When the sleep command is given, the computer appears to enter a sleep
state. The power light changes from green to yellow and the fans
stop. When the power button is pressed to wake the computer, it
appears to try to wake up. The power light turns green and the fans
start up. However, monitor doesn’t respond and remains in standby.

Killing the power to force a resume from hibernation doesn’t work
either. The windows resume screens appears and then goes blank.
After a while the computer reboots.

A check of the System Event Log show that the computer last
successfully resumed from sleep on 4/30. The first resume failure was
on 5/5. Between those dates no changes were made except for some
Windows Updates to the Office 2007 help files (Access (KB963663),
Excel (KB963678), Powerpoint (KB963669) and Word (KB963665).

The computer is a Compaq Presario SR5110NX with Vista Home Basic, an
AMD Athlon 64 3800+ CPU, an Nvidia integrate graphics chipset and 2GB
RAM.

Does anyone have any suggestions about what may have caused this
problem and how to trouble shoot it?

Something I noticed in the System Event Log back when sleep and resume
worked was the following pairs of events:

Information Kernel-Power ID: 42 The system is entering sleep.
Information Power-Troubleshooter ID: 1 The system has resumed from
sleep.

These events don’t appear in the log after the problem stated to
occur. Instead the following events appear:

Error EventLog ID:6008 The previous system shutdown at (time & date)
was unexpected.

The fact that I no longer get a Kernel-Power 42 (The system is
entering sleep) log event suggests that the computer is not entering
the S3 state correctly. I’m assuming that Vista writes the ‘Kernel-
Power 42’ event when it transitions to the S3 state. Is this
correct? If my assumption is correct it follows that this is a
‘Sleep’ problem and not a ‘Resume’ problem. Does his make sense?

I have the same exact problem. The computer powers down for sleep, but when
it's time to wake up, the hard drive comes back, but not the monitor. I
restored Vista and that worked for a while, but then the problem reoccurred.
It will sometimes power down in the middle of whatever I'm doing and go to
sleep. I've asked on here four times but have not gotten a response yet.
Hopefully, someone will come up with some options for us.

"George" wrote:

I ran the MS System File Check utility (SFC.exe). It found corrupted
system files which it couldn't repair. Unfortunately there wasn't and
old enought Restore Point for System Restore to fix the problem. I
had to use the HP System Recovery feature to reinstall Vista. This
fixed the problem.

If I had a Vista Home Basic SP1 disk, I would have tried a repair
reinstall.

George

On Jun 8, 4:08*pm, Vicki_g <Vic...@xxxxxx> wrote:

My Vista re-install worked too. TEMPORARILY. Maybe one of the updates messed
it up. I wouldn't know which one to check for.

"George" wrote: