Bluescreen BCCode: a, minidump included

[balance]

Hello,
Recently I've experienced frequent (1-2 times per day) of the infamous MS BSOD.
My system is AMD X4-630 with 8G of RAM (4 identical 2G from Kingston) running Win 7 64 bit.

The error message is:

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033

Additional information about the problem:
BCCode: a
BCP1: FFFFEF000AC73290
BCP2: 0000000000000002
BCP3: 0000000000000000
BCP4: FFFFF800030B83D7
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1

and attached is the minidump.

Please help pin-down the problem. Thanks much!

 

[Mark56]

The minidump error code is 'A' and this usually means there is a defective driver but the log also says there is memory corruption.

First run the Driver Verifier to isolate any driver problems and then if that produces nothing positive move on to the memory test.

If you have recently changed any drivers or added new hardware uninstall them and see if the crashes stop.

For windows XP - Click on Start and then Run. Type verifier into the box and hit the Enter key.
For Vista and Windows 7 - Click on Start and type verifier into the search box then click on verifier in the list that pops up.

Driver Verifier Manager will open.

Select the first choice "Create Standard Settings" and click on the "Next" button.

Now select "Automatically select all drivers installed on this computer" and click on the "Finish" button.

A box will appear asking you to restart the PC for the changes to take effect. Click on "OK" and reboot the PC.

To stop Auto reboot so you can read the error message do this for Windows XP:
Click the Start button, right-click My Computer, click Properties, click the Advanced tab, and then click Settings under Startup and Recovery.
Under System Failure, uncheck the "Automatically restart" check box.

And do this in Windows 7 and Vista:
Click Start, select 'Control Panel' select 'System' in the left pane select 'Advanced System Settings' in the box select the 'Advanced' tab then under 'Startup and Recovery' select 'Settings.' In the box under 'System Failure' uncheck 'Automatically Restart'.

If the PC reboots normally then there is no problem with any of the drivers. If you get a blue screen straight away it will name the faulty driver. If you are absolutley certain that the named driver is OK then make a note of it.

You will then have to go back into the Verifier and instead of selecting all drivers select "Select drivers from a list". Click on "Next" and the list of drivers will appear. Select them all apart from the one you know to be OK. Click on "Finish" and reboot.

Once you have identified the faulty driver or confirmed that there are none go back to the first page of the Driver Verifier Manager and select "Delete Existing Settings" and click on "Finish"

Power off the PC and remove the mains connection, always touch the metal of the case with your hands to avoid any static electricity from causing component damage. (On laptops ALWAYS remove the battery before removing or replacing memory modules). Remove all your memory modules. Clean the contacts with a soft rubber (up and down not from end to end) then insert just one module and reboot to test for any change in performance. Repeat this for every module one at a time and run for at least 24 hours. Obviously if you only have one module this cannot be done, but you should still remove and clean the module and reseat it and test.

If you only have one stick download this to test it. http://www.memtest.org/

You need to scroll down the page until you see the three blue screenshots. Just below is the list of downloads for Memtest86+ V4.10. Click on Download - Pre-Compiled Bootable ISO (.zip)and save to your desktop, When the download is complete right click the file and select Extract Here and burn the image to a CD. In windows 7 right click the extracted file, select Open With, then select Windows Disc Image Burning Tool then follow the prompts. For all other versions of windows (if you do not have an ISO burner) download this free software. http://www.isoimageburner.com/

Boot the PC into the Bios setup and set the CD/DVD drive to 1st in the boot sequence. Insert the disk in the drive then reboot and the disc will load into dos. Leave the test to run through at least 5 cycles.

The memtest will not be 100% accurate but should easily detect any major faults.

 

[balance]

I will do as told and report back.
Thanks for a quick reply!