one of my customer's Hp (dont remember the exact model. it's an old model. maybe >3 or 4 years old) laptop, gave NO display. either in LCD nor in external VGA. but all the LEDs are ON (power, wifi,HDD) and the fan started for <5 seconds and turned off. can anyone tell me what could be the problem? i suspected the MAX power IC and while verifying its voltage(refering to its datasheet), i mistakenly shorted 2 pins. now the laptop is complately DEAD as the MAX main power IC is not at all working(because of my mistake). i dont know what am i gonna tell the customer. i couldnt even get that IC in our local market. i am a bit frustrated. i wouldnt worry if i could atleast return the laptop, as it was. anyhow, that's not the issue. can anyone give me any tips regarding this issue?
1.CPU FAN on for few seconds
2.ALL LEDs constantly ON
3.No display either in LCD and external VGA