[Fix] 0x00000001 APC_INDEX_MISMATCH error in Windows 7
Microsoft has reported that some Windows 7 and Windows Server 2008 R2 can experience STOP 0x00000001 error, which is hexadecimal code for APC_INDEX_MISMATCH error, during startup or at other times.
The complete error looks something like this:
STOP: 0x00000001 (parameter1, parameter2, parameter3, parameter4)
The parameters in this Stop error message may vary, depending on the configuration of the computer.
There are several reasons for the problem to occur, it can be due to hardware or software driver issues, it can be due to memory corruption, or it may be due to too much RAM that exceeds the capability of the BIOS and motherboard. If you have verified all options like re-installed drivers, software, used memory diagnosis etc, and still face this problem, then there is one more reason, it is due to issue with the Windows system file win32k.sys. Microsoft has released an hotfix to fix this issue. Simply download the hotfix, run it, and follow the on-screen instructions.
Applies to Windows 7, Windows 7 Service Pack 1 (SP1, Windows Server 2008 R2, and Windows Server 2008 R2 Service Pack 1 (SP1)
Did it fix your computer’s problem? Let us know in comments below.