windows doesnt start up

[kashyapa1917]

when you start the laptop windows doesnt star and asking to do a startup repair. It end up saying cannot repair and the repair details gives the following error
Root cause found
A patch is preventing the system from starting
Repair action : system files integrity check and repair
Result: failed, error code =0x490
All other repair actions are successfull
Please help me to solve this

and repair

 

[marsmimar]

Hello kashyapa1917 and welcome to Seven Forums.

One of the Forum experts prepared these troubleshooting guides. They've helped many to solve their start up problems.

http://www.sevenforums.com/tutorials/219533-troubleshooting-windows-7-failure-boot.html

http://www.sevenforums.com/tutorials/220165-troubleshooting-steps-windows-7-a.html