My laptop (Dell Precision m4600) won't boot. After the initial boot sequence, the screen is black with a blinking cursor in the upper left corner. I have run diagnostics from the boot menu, but everything looks ok except for the battery which is somewhat weak. Booted from the installation DVD and tried to restore from safe mode but Windows requires me to choose an install but gives me none to choose from. Repair yielded no positive results either. Installed OS:es are Windows 7 + Windows 8 (VHD) and the problem started after blue screen in Windows 8. Any tips on how to resolve the problem would be greatly appreciated.
- Insert Windows 8 installation media and boot from it.
- Select Repair and go to command prompt.
- Attach VHD using diskpart.
- Run these two commands:
bootsect /nt60 all
where v: is mounted VHD drive (change drive letter to match your mappings).
Hope this helps.
Eventually you have to run
sfc /scannow (again from Windows 8 repair console)
if you cannot boot to Win8 after repair steps above.