N when i go to COMAND PROMPT number of repair attempt:1 Numbr of root causes:1 .in these following tests performed CHECK FOR UPDATES,SYSTEM DISK TEST,DISK FAILURE DIAGNOSIS,DISK METADATA TEST,TARGET OS TEST,VOLUME CONTENT CHECK,BOOT MANAGER DIAGNOSIS,SYSTEM BOOT LOG DIAGNOSIS result completed successfully. error code = 0x0
root causes found.boot manager failed to find OS loader.
Repair action:File repair
result: failed. Error code = 0x490
root causes found.boot manager failed to find OS loader.
Repair action:File repair
result: failed. Error code = 0x490