BSOD attempting to upgrade from Win7 x86 to x64

I am currently running Win7 x86 Home Premium. I want to take full advantage of the 6gb of RAM I have installed, so I want to upgrade to x64.

After booting up from the x64 OS disc, the system loads the files. (Including the loading progress bar.) Then proceeds to a screen that says "Starting Windows", but before the logo appears (Or any signs of the OS installing), I get a BSOD every time.

"An attempt was made to write to read-only memory
Technical Information:
*** STOP: 0x000000BE (0xFFFFF8800BE4DFF8, 0x000000017F843900, 0xFFFFF880009A97B0, 0x000000000000000E)"

My specs, taken directly from "msinfo32" or "System Information" are as follows:
OS Name: Windows 7 Home Premium
Version: 6.1.7601 Service Pack 1 Build 7601
System Manufacturer: Micro-Star International Co., Ltd
System Model: G33M MS-7357 (Mobo)
System Type: X86-based PC
Processor: Intel Core 2 Duo CPU - E6850 @ 3.0 GHz, 3003 Mhz, 2 Cores (This is 64bit compatible according the the product specs.)
BIOS Version/Date: American Megatrends Inc. V1.2, 11/2/2007
SMBIOS Version: 2.5
Installed RAM: 6.00 GB
Total Physical Memory: 3.25
Total Virtual Memory: 6.49 GB
Page File Space: 3.25 GB

Also, my GPU is the Nvidia 9800GT.

My computer is NOT prebuilt. I had Windows XP for several years, but installed Win7 x86 a few days ago.
4 answers Last reply
More about bsod attempting upgrade win7
  1. First thing I would do is to run MEMTEST86 v4.2 to check that memory.
  2. +1 for memtest. And testing out one RAM module at a time.
  3. I solved the problem guys.

    All I had to do was disconnect my secondary HDD. (which was not the target space)

    No idea why a second HDD would cause that BSOD to show up though...
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