BSOD at user log in page everytime, error 0x000000d1

According to Carrona.org, STOP 0x000000D1: DRIVER_IRQL_NOT_LESS_OR_EQUAL
Usual causes: Device driver

But not seeing the crash dumps, we cannot decide about the driver; so please post it following the Blue Screen of Death (BSOD) Posting Instructions. If you cannot boot normally at all, boot into Advanced Boot Options, safe mode with networking, and then do it.

BTW, do you use any virtual drive emulator, say Daemon Tools or MagicDise?

Dump Files - Configure Windows to Create on BSOD

Follow it, and search manually in the default path: C:\Windows\Minidump or %SystemRoot%\Minidump.

Post the result following the Blue Screen of Death (BSOD) Posting Instructions.

► Atheros AR5007G Wireless Network Adapter Driver

Code:

*******************************************************************************
*                                                                             *
*                        Bugcheck Analysis                                    *
*                                                                             *
*******************************************************************************

Use !analyze -v to get detailed debugging information.

BugCheck D1, {4, 2, 0, 892e05cc}

Unable to load image \SystemRoot\system32\DRIVERS\athr.sys, Win32 error 0n2
*** WARNING: Unable to verify timestamp for athr.sys
*** ERROR: Module load completed but symbols could not be loaded for athr.sys
Probably caused by : athr.sys ( athr+3a5c1 )

Followup: MachineOwner
---------

And it is very old.

Code:

 kd> lmvm athr
start    end        module name
90869000 90979000   athr     T (no symbols)           
    Loaded symbol image file: athr.sys
    Image path: \SystemRoot\system32\DRIVERS\athr.sys
    Image name: athr.sys
    Timestamp:        Tue Jun 09 23:34:52 2009 (4A2EA444)
    CheckSum:         0011A043
    ImageSize:        00110000
    Translations:     0000.04b0 0000.04e4 0409.04b0 0409.04e4

Update it from ATHEROS drivers for Microsoft Windows (Atheros?????).

► Get rid of nvstor.sys.

1. Right click on "my computer" icon and click "manage" on the context menu.
2. It will open the "computer management" window.
3. Select "Device Manager" in the left pane, It will list all the existing devices up.
4. Expand "Disc Drives" by clicking on the triangle in front of it.
5. Select one item under it, right click, uninstall.
6. Continue the process for all items under "Disc Drives"
7. Now restart the computer. At restart, windows will auto configure the appropriate system driver, msahci.sys.

► Free up the startup.

1. Click on the Start button
2. Type “msconfig (without quotes), click the resulting link. It will open the System Configuration window.
3. Select the “Startup” tab.
4. Deselect all items other than the antivirus.
5. Apply > OK
6. Accept the restart.

Let us know the results.

Need to see that dump.

If the crash took place before the desktop appeared, the dump might not be recorded, in that case send us a camera snap of the blue screen.

And, as a test, uninstall MagicDisc, and see if it is still crashing on startup or not. Later I may ask you to uninstall one more program, depending on the situation.