Windows 8 build 7983 (fbl_core2_sid_data)

6.2.7983.0.fbl_core2_sid_data.110413-2100
	Build of Windows 8
OS family	Windows NT
Version number	6.2
Build number	7983
Build revision	0
Architecture	x86, x64
Build lab	fbl_core2_sid_data
Compiled on	2011-04-13
Expiration date
Timebomb	2012-03-15 (+337 days)
About dialog

Windows 8 build 7983 (fbl_core2_sid_data) is a build of Windows 8. The free/retail x86 and x64 compiles were made public on BetaArchive on 13 September 2024.

Editions and keys[edit | edit source]

Edition	Key
Home Basic	YGFVB-QTFXQ-3H233-PTWTJ-YRYRV
Home Premium	RHPQ2-RMFJH-74XYM-BH4JX-XM76F
Professional	HYF8J-CVRMY-CM74G-RPHKF-PW487
Ultimate	D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV

Changes[edit | edit source]

User interface[edit | edit source]

Redpill-specific changes[edit | edit source]

The Other Programs page has been replaced with a new Applications list, which displays the user's installed applications. The Charms bar now brings up a dedicated clock, and the Settings charm was redesigned to include new (albeit non-functional) option buttons for power, keyboard layout settings, and active network connections. The ability to modify the Start screen's accent color has been implemented, although its functionality is only available through the use of a registry hack and is largely limited to only two specific color choices. To change the start screen's accent color to dark blue, merge the following entry into the current user's registry hive:

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent]
"ColorSet"=dword:00000001

Miscellaneous[edit | edit source]

Restarting the system will now use the appropriate string value.
The Windows Basic theme is now used inside of the Windows Preinstallation Environment, replacing the older Classic visual style.

Bugs and quirks[edit | edit source]

Advanced Vector Extensions CPU bug[edit | edit source]

The x86 compile of this build will not boot on some CPUs with the Advanced Vector Extensions (AVX) instruction set due to a bug where a CPU triple fault occurs immediately after the boot screen is first displayed. A workaround is discussed later in the article.

Networking[edit | edit source]

Enabling the network adapter may result in a 0x133 bugcheck on some computers.

Aero[edit | edit source]

In the x64 compile, only the top portion of the window frame is blurred when using the Windows Aero theme, leaving the side borders transparent.

Compiler[edit | edit source]

Compatibility[edit | edit source]

VMware Workstation[edit | edit source]

The Intel SSE bug can be worked around by setting the compatibility level to version 7.x or lower and the following block of code must be added to the VMX (virtual machine configuration) file in order to allow this build to boot on modern Intel CPUs:

cpuid.0.ebx = "0110:1000:0111:0100:0111:0101:0100:0001"
cpuid.0.ecx = "0100:0100:0100:1101:0100:0001:0110:0011"
cpuid.0.edx = "0110:1001:0111:0100:0110:1110:0110:0101"
cpuid.1.eax = "0000:0000:0000:0001:0000:0110:0111:0001"

The above configuration is mostly not required if the host machine has an AMD processor, and as such only requires the compatibility version to be changed.