In addition to the two previous fine suggestions regarding addressing the potential inadequacy of your Power Supply Unit.
I would recommend you also address these three drivers that predate Windows 7 RTM
GVTDrv64.sys 9/5/2006 and etdrv.sys 3/19/2009 Easy Tune (known issues with Windows 7) uninstall and or rename for testing
and
gdrv.sys 3/12/2009 Easy Saver (power utility) uninstall and or rename for testing.
If Blue screens persist after tending to the above three drivers and the potential power supply issue which I suspect may indeed be the more likely culprit.
Then;
Download Memtest86+
from this location here. Burn the ISO to a CD and boot the computer from the CD from a cold boot after leaving it off for an hour or more.
Ideally let it run for at least 7 passes / 6-8 hours. If errors appear before that you can stop that particular test. Any time Memtest86+ reports errors, it can be either bad RAM or a bad Mobo slot. Perform the test RAM sticks individually as well as all possible combinations. When you find a good one then test it in all slots. Post back with the results.
See
this Guide to using Memtest 86+
Additionally:
First make sure your machine is configured properly to facilitate the collection of .dmp files.
Go to Start and type in sysdm.cpl and press Enter
Click on the Advanced tab
Click on the Startup and Recovery Settings button
Ensure that Automatically restart is unchecked
Under the Write Debugging Information header select Small memory dump (256 kB) in the dropdown box
Ensure that the Small Dump Directory is listed as %systemroot%\Minidump << where your .dmp files can be found later
Click OK twice to exit the dialogs, then reboot for the changes to take effect.
Then:
Please read the first post in this sticky thread here
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Do your best to accumulate the data required.
Run the SF Diagnostic tool (download and
right click the executable and choose run as administrator)
Download and run CPUz. Use the Windows snipping tool to gather images from
all tabs
including all slots populated with memory under the SPD tab.
Likewise RAMMon.
Export the html report, put everything into a desktop folder that you've created for this purpose, zip it up and attach it to your next post (right click it and choose send to, compressed (zipped) folder.
Additionally, if you haven’t already, please take some time and fill out your system specs in your forum profile area
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And you may want to consider updating to Windows 7 Service Pack 1
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UPDATE READINESS TOOL.
Download and install the correct system readiness tool prior to installing SP1.
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