我是重装系统后出现的，win8装win7，系统是官方下载的，非ghost。
Checking file system on C:
The type of the file system is NTFS.
One of your disks needs to be checked for consistency. You
may cancel the disk check, but it is strongly recommended
that you continue.
Windows will now check the disk.
CHKDSK is verifying files (stage 1 of 3)...
75776 file records processed.
File verification completed.
38 large file records processed.
0 bad file records processed.
2 EA records processed.
52 reparse records processed.
CHKDSK is verifying indexes (stage 2 of 3)...
107310 index entries processed.
Index verification completed.
0 unindexed files scanned.
0 unindexed files recovered.
CHKDSK is verifying security des criptors (stage 3 of 3)...
75776 file SDs/SIDs processed.
Cleaning up 3 unused index entries from index $SII of file 0x9.
Cleaning up 3 unused index entries from index $SDH of file 0x9.
Cleaning up 3 unused security des criptors.
Security des criptor verification completed.
15768 data files processed.
CHKDSK is verifying Usn Journal...
34376280 USN bytes processed.
Usn Journal verification completed.
Windows has checked the file system and found no problems.
78046207 KB total disk space.
10710492 KB in 59695 files.
43192 KB in 15769 indexes.
0 KB in bad sectors.
178323 KB in use by the system.
65536 KB occupied by the log file.
67114200 KB available on disk.
4096 bytes in each allocation unit.
19511551 total allocation units on disk.
16778550 allocation units available on disk
尊敬的联想用户您好，预装Windows 8系统的机型更换安装Windows 7系统，是需要进行bios设置的。您可以备份好硬盘数据后，参考下面的信息进行操作测试。
笔记本出厂预装Windows 8改装Windows 7的操作步骤及常见问题：
http://support1.lenovo.com.cn/lenovo/wsi/htmls/detail_20130402212615944.html
如果以上方案没有解决您的问题，欢迎您使用联想服务官方微信在线咨询
