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hello my frined:

when i was updating my loptop's bios.the unknown program shuting down my system. now, my loptop  don't work and  Black screen on boot, caps lock blinking -( Compaq Presario CQ57-311SO) is happended. please help me immediatelly.

 

my loptop's model is: hp probook 4520s notebook pc

and my loptop's os is: windows 7 ultimate x64

 

thanck a lot./

1 REPLY 1
HP Recommended

Hello vr21us3333,

 

Your ProBook is a Business model.  Your issue would be best answered on the HP Enterprise Business Community Forum

 

Good luck!

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