That BSoD code is not only associated with RAM problems but with Drivers as well. Since you have already run Memtest and Prime95 with no issues and you also have done a reinstall that would lead me to say you have a driver that is not liking Windows 7 at all.
Bug Check 0xA: IRQL_NOT_LESS_OR_EQUAL
This bug check is issued if paged memory (or invalid memory) is accessed when the IRQL is too high.
The error that generates this bug check usually occurs after the installation of a faulty device driver, system service, or BIOS.
If you encounter bug check 0xA while upgrading to a later version of Windows, this error might be caused by a device driver, a system service, a virus scanner, or a backup tool that is incompatible with the new version.
If a kernel debugger is available, obtain a stack trace.
To resolve an error caused by a faulty device driver, system service, or BIOS
Restart your computer.
Press F8 at the character-based menu that displays the operating system choices.
Select the Last Known Good Configuration option from the Windows Advanced Options menu. This option is most effective when only one driver or service is added at a time.
To resolve an error caused by an incompatible device driver, system service, virus scanner, or backup tool
Check the System Log in Event Viewer for error messages that might identify the device or driver that caused the error.
Try disabling memory caching of the BIOS.
Run the hardware diagnostics supplied by the system manufacturer, especially the memory scanner. For details on these procedures, see the owner's manual for your computer.
Make sure the latest Service Pack is installed.
If your system has small computer system interface (SCSI) adapters, contact the adapter manufacturer to obtain updated Windows drivers. Try disabling sync negotiation in the SCSI BIOS, checking the cabling and the SCSI IDs of each device, and confirming proper termination.
For integrated device electronics (IDE) devices, define the onboard IDE port as Primary only. Also, check each IDE device for the proper master/subordinate/stand-alone setting. Try removing all IDE devices except for hard disks.