我的电脑在进入WIN98桌面之前总出现下面一段话——

Cannot find a device file that may be needed to run windows or a windows application.
The windows registry or SYSTEM.INI file refere to this device file, but the device file no longer exists. If you deleted this file on purpose. try uninstalling the associated, application using its uninstall or setup program.
If you still want to use the application associated with this device file, try reinstalling that application to replace the missing file.
C:\KAV2003\kavkrnl.vxd
Press a key to continue.

但是我已经删除这个程序了，究竟怎样才能令系统正常呢？？
请帮忙！！！！！！！！！