What Happened to My Win7 Page File?

This system had something happen. . . It forced a system repair, broke the trusted domain and then once I re-established the domain connection, I found that the page file went missing. When the system reboots, the Advanced/Performance window is immediately presented.  No matter how I try to change the settings, it isn't holding them.  I've checked for viruses, as well as performed a chkdsk against the drive.

What might be my next step?
MariaJoyalAsked:
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Mike RoeCommented:
Are you sure the page file is set?  Here is where to check

Start -> Right-Click "Computer" -> Properties
Click "Advanced System Settings"
Click "Advanced" tab
In the "Performance" section, click the "Settings..." button.
In the "Performance Options" dialogue, click the "Advanced" tab
In the Virtual Memory section, click the "Change..." button.
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MariaJoyalAuthor Commented:
I am absolutely sure.
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marsiliesCommented:
Are you setting the page file in the Advanced/Performance window before clicking OK? You have to click the "Set" button after configuring the page file settings. If you just click the OK button at the bottom of the window before clicking Set, the pagefile won't be created.
http://www.tomshardware.com/forum/4383-63-missing-pagefile


No Page File Set
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jcimarronCommented:
MariaJoyal --Run a System Restore to a date before the problem started.
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cantorisCommented:
Try setting the page file to size zero, reboot and then set it to Windows managed or your own choice.

Anything in the application or system event logs?

You might also want to try a   sfc /scannow   from an elevated command prompt.
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MariaJoyalAuthor Commented:
I have tried the size zero and waiting to hear back from the user on the status (I can't always reboot on demand).  I understand the command sfc /scannow and I understand what the command prompt means.  Is an "elevated" command prompt something different?
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jcimarronCommented:
MariaJoyal--
Did you try the System Restore?
"Elevated" command prompt means you "Run it as an Administrator".
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MariaJoyalAuthor Commented:
Well there you go, something new.  [Elevated = Run As Admin]

Not really having any idea when the problem actually started, I hadn't considered a system restore.  This doesn't seem to impact this user all that much, and it's just a fluke I stumbled on the issue to begin with.

I can try going back a bit and see what happens.  (Somewhere in my wanderings this week someone's PC didn't have a restore point available, and I'm not sure if it's this system or not!)
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cantorisCommented:
Vista and newer include a new feature called "User Account Control" as a security feature that causes apps launched by an administrator-level user account to behave as though they were run as a standard user.  This is needed because some poorly-written old apps insist on admin rights and so in an enterprise environment it may  be necessary to give all normal users admin rights.  IT Admins hate entrusting technically-untrustworthy users with that level of access.  User Account Control (UAC) is a safer compromise that means most apps such users run will run without administrative levels of access - so for example a virus they pick up won't have free reign over the machine.

The side effect is that when you as an admin want to do something that requires administrative access (such as run SFC), then you risk getting an Access Denied message because UAC has launched it as a non-admin.  When you launch your command prompt, you need to ensure UAC does not run it as a non-admin; you need to run it back at "elevated" admin levels.

To open an elevated command prompt, right-click the command prompt entry in the start menu and select "Run As Administrator".  Acknowledge any security pop-up message.  You can do the same with any executable file/app.

If you knew all this all along, but not the term "elevation" in this context, I apologise  :)
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cantorisCommented:
Doh!  In the olden days, my MSN Messenger would have alerted me to jcimarron's reply to this thread so I wouldn't have typed all that.  Now I'm forced to use Skype (thanks MS...), I don't get those notifications and so got carried away giving a full explanation!

hehe
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MariaJoyalAuthor Commented:
Mostly I did know.  The explanation is very good, however, and may be important to someone else viewing this post!
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MariaJoyalAuthor Commented:
At this point, I've discovered that restore points only go back to 9/12 (which is later than the problem was first reported).  Setting the page file to zero and rebooting didn't fix the issue either.  I'll try the sfc /scannow command as soon as I'm able.
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MariaJoyalAuthor Commented:
I know this is going back a ways. . .  Finally was able to run sfc /scannow on that system and found no relief from this paging problem.  Other than reimaging the box, does anyone have other thoughts?
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jcimarronCommented:
MariaJoyal--
Concerning reimaging the box, you might try a Repair Install

http://www.sevenforums.com/tutorials/3413-repair-install.html

It should not affect your personal data or installed programs, but it never hurts to back up first.
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MariaJoyalAuthor Commented:
At this point, my I feel it makes more sense to reimagine the machine.
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jcimarronCommented:
MariaJoyal--
It's your call but a Repair Install would be easier to recover from.
t should not affect your personal data or installed programs, but it never hurts to back up first. "
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