It may be that the disk is defective in areas, but you can start on any mode, we have to download the repair console to run chkdsk.
Download the Vista repair console. Note that on some brands of PC, simply press on some keys to select the boot CD to boot first without going through the bios (F12 Acer for example). Then use the Command Prompt option. In the black window, type chkdsk c: / f . If no positive results using the Startup Repair option. If this option does not solve the problem, use the command Bootrec.exe available with the option Command Prompt from the repair console.
Then type these commands (followed by pressing Enter).
Code:
c:
cd \
cd boot
Bootrec.exe / fixmbr
If no result, use
c:
cd \
cd boot
Bootrec.exe / fixboot
If no result, use bcdedit / export C: \ BCD_Backup
c:
cd \
cd boot
attrib bcd-s-h-r
ren c: \ boot \ bcd bcd.old
bootrec / RebuildBcd
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