Multiple Machines getting STOP 7A

[Stingray]

I have come across something that has me concerned and a little stumped. We
moved into a new building a couple months ago and since then we've had a half
dozen or so computers start getting BSOD with STOP 7A,
KERNEL_DATA_INPAGE_ERROR messages. The errors are infrequent, once or twice a
week at most. I've looked at the many articles on the STOP error and
verified, to the limits of our scanners, that there are no virus' or malware
on the systems. In a few cases I ran CHKDSK and that seems to have cleared up
the errors for now.

What has me a little baffled is why this is happening to several systems at
the same time? Despite the move, it seems unlikely for this many simultaneous
hardware failures that would all cause intermittent STOP 7A errors. We did
make changes to our network configuration to add routing and VLans along with
IP phones and the software to go with them. I wonder if something there could
be contributing. I welcome any suggestions or explanations you may have.

Thanks in advance.

 

[Stingray]

I forgot to include the details of the STOP errors. The one I was able to
record read as follows:

STOP 0x0000007A (C07C1EC0, C000000E, F83D8302, 0AE1E860)

 

[PA Bear [MS MVP]]

Are all of the computers running WinXP SP2 or SP3 and are they all fully
patched at Windows Update?

...there are no virus' or malware on the systems.

And how have you determined this? If one (1) computer is infected, it could
be infecting & reinfecting all the others.

<QP>
0x0000007A: KERNEL_DATA_INPAGE_ERROR
A page of kernel data was not found in the pagefile and could not be read
into memory. This might be due to incompatible disk or controller drivers,
firmware, or hardware.
</QP>
Source: http://aumha.org/a/stop.htm

Bug Check 0x7A: KERNEL_DATA_INPAGE_ERROR:
http://msdn.microsoft.com/en-us/library/ms793989.aspx

Connecting a hard disk drive in slave only mode leads to system halt during
resume from standby:
http://support.microsoft.com/kb/330100

BIOS manufacturers should not clear the IDE Decode Enable bit in the _STM
ACPI method:
http://support.microsoft.com/kb/913379