my child got hold of my laptop and since then it wont boot up, there is power going to it but it just says
BOOTMGR is missing
Press CTRL+ALT+DEL TO RESTART
You don't say what the OS is but assuming Microsoft go to http://support.microsoft.com/search/default.aspx?query=bootmgr+missing&catalog=LCID%3D2057&spid=&mode=r&lsc=0
and enter your problem.
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Try fixfault.com to fix notebooks/laptop pcs.