BOOTMGR is missing. Press Ctrl+Alt+Del to restart.

[strawberryboy08]

Please guys help me. My Laptop is ASUS 550L. It stopped responding while I'm trying to connect to the Internet so I shut it down by pressing the power button. Then When I turned it on, It said that "Startup repair cannot fix this computer automatically". I tried to find solutions online and then I followed some instructions from a site then now the laptop says "BOOTMGR is missing. Press Ctrl+Alt+Del to restart". I tried making a Flash drive Repair Disk for Windows 7 but When I went to Boot Options, There's no Usb there. Can you please help me? Please.

[Geek-9pm]

Do you have a DVD with the Widows 7 instalation?
If so, it can be usedto repair that kind of error.

To run the Bootrec.exe tool, first start the Windows RE:
1    Put the Windows Vista or Windows 7 media in the DVD drive, and then start the computer.
2    Press a key when you are prompted.
3    Select a language, a time, a currency, a keyboard, or an input method, and then click Next.
4    Click Repair your computer.

https://support.microsoft.com/en-us/kb/927392

[strawberryboy08]

Cuys, I need help. I tried to create a repair for Windows 7 in a flash drive but when I went to boot options, There's only four options there. P1: HL-DT-ST DVDRAM GU&1N,      P0: HGST HTS541010A9E680,       MultipleCard Reader 1.00      and      VEFI MultipleCard Reader 1.00. I tried selecting P1 and the same message appears which is BOOTMGR is missing. P0 is also the same. VEFI MultipleCardReader says the same. Multiple Card Reade says Invalid System Disk. Replace the disk and then press any key. When I don't connect the USB, Only two Options apper which are P1 and P0.

[strawberryboy08]

I don't have installation disk and dont have money also to bring to for repair. I'm only a student. Please help me.

[Geek-9pm]

OK, you came to the right place.
You said

My Laptop is ASUS 550L

If the computer camwith Windows, then it already has beenlicensed. So you do not need to buy a new retails copy of the Windows operating system.
Here is what people do if for some reson they do not have the install CD or DVD.
You get a friend t o help with a working computer taht has Internet
You  two will do this:
A. Go to the Microsft ssite and look for a download of your version of Windows
    ( Maybe your is the Home 32 bit version.)
B. Burn the ISO file to a DVD using any ISO burner.
C. Taje the new DVD and set yur computer to boot from theDVD.
     (This is inside opf the BIOS setup area.)
This video shows ho you make the laptop boot up the DVD
http://www.asus.com/NZ/support/FAQ/1008829
Can you do that? 

EDIT:
From a Google search:
Download Windows 7 - Microsoft
https://www.microsoft.com/en-us/software-download/windows7
If you need to install or reinstall Windows 7 you can use this page to download a disc image (ISO file) to create your own installation media using either a USB ...
Link above has more information about product key issues. If yu can't find the proct key, you may have to call Microsft support.