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HP Probook 4520s doesn't start!!!
Hello Guys!!!
I have HP Probook 4520s. I have 9 cell 7200mAh battery installed on my laptop. My laptop doesn't start up when i press power button while on battery power. When i press power button LED light (where charger cable connected) blinks four or five times and stops and laptop doesn't start but when i connected charger (AC Power) then it starts up and works normally. I am facing this problem from about a month and it doesn't solved. Please help me to solve my problem.....I am waiting for your replies.....Thanks!!!