A number of Windows 7 Beta users have been reflected in these two days, after the latest update for Windows Update Push was installed, the blue screen Panic (BSOD) was encountered while the error message showed Kl1.sys file deletion (a failure on Kl1.sys).
Based on the information gathered, the problem is likely to be caused by a conflict with the Kaspersky antivirus component.
There is a simple solution, that is, to cancel Kaspersky with the system started.
The steps are as follows:
1. Press F8 to enter Safe Mode menu after startup, it is recommended to try Safe Mode with network support, if no, try the Safe mode without network.
2. When successfully entered Safe mode, click the Start menu, select "Run", enter Msconfig to open the System Configuration window.
3. Switch to the fourth "Start" tab, the "Launch project" of Kaspersky related content before the hook removed.
Reboot the system after determining. After normal access to the system, you can manually run the Kaspersky Master program, and set it to not start with the system.
If you want to use Kaspersky under Windows7, you can use Kaspersky's Technology Preview version developed for Windows 7.