Solve the win7 laptop boot display invalid system disk method

Fault phenomenon 1: Startup appears "Invalid system disk, Replace the disk and then press any key" (to the effect: invalid system disk), can not enter the system.
Workaround:
This problem occurs because the system disk lacks the startup file. We only need to use the installation disk in the "Failure Recovery Console" to use these two commands:
1, fixmbr 2 , fixboot c: (assuming the system is placed in the C drive)
Another way is to use a boot disk, write the boot.ini file, and then write the system boot information, you can attach the boot.ini example:
[Boot Loader]
Timeout=3
Default=multi(0)disk(0)rdisk(0)partition(1)WINNT
[Operating Systems]
multi(0)disk (0)rdisk(0)partition(1)WINNT="Microsoft Windows 2000 Professional" /fastdetect
multi(0)disk(0)rdisk(0)partition(4)WINDOWS="Microsoft Windows 2003 Enterprise" /fastdetect
C: = "Microsoft Windows"
Failure 2, boot or reboot can not enter the system, and display Invalid system disk, Replace the disk and then press any key or disk error Typeface.
The above meaning is to say that the disk is wrong, you need to replace the disk. At this time, just unplug the USB flash drive or card reader connected to the computer and restart it to solve this problem. The solution is to press F2 to enter the BIOS. In the boot device sequence, set the CD-ROM drive and the hard disk to the front, and turn the U disk boot item (USB-HDD) to the back. After setting, you must remember to press F10 to save.
Troubleshooting:
1, hard disk data line contact is not good, try again and again.
2, the system file on the hard disk is lost, such as IO.SYS, MSDOS.SYS file. The recovery method is to start the computer with the Windows boot disk, and then use the SYS command to re-deliver a system to the hard disk to solve;
3, use the boot CD, insert the CD-ROM drive, use the CD to start the computer, set the CD-ROM drive to the first Start;
4, open the chassis, take all the data of the hard disk and re-plug it, then take the memory and plug it in again, then turn it on again to see if it can enter CMOS;
5. It may be that the system is broken. If there is data, remove the hard disk, hang it on another computer, then copy the data, then take it back to your computer, re-partition, and format it. Then enter the BIOS to set the CD ROM ROM boot, the second option to select the hard disk HDD0, if not, then try to replace the data cable.