Boot from Windows 7 DVD

• Choose your language, time, currency, keyboard language and click Next
• Click Repair your computer
• Select the operating system you want to repair and click Next
• Click Command Prompt in the Systems Recovery Options dialog box
• Type the following commands in the Windows RE command prompt window and press Enter to execute each command (paying particular attention to insert a space where shown below):
• bcdedit /export C:\BCD_Backup
• c:
• cd boot
• attrib bcd -s -h -r
• ren c:\boot\bcd bcd.old
• bootrec /RebuildBcd
• copy x:\windows\system32\drivers\compbatt.sys c:\windows\system32\drivers\compbatt.sys
• copy x:\windows\system32\drivers\battc.sys c:\windows\system32\drivers\battc.sys