DELL 5150 LAPTOP DOES NOT POWER ON

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 bong -
Hello,

MY DELL 5150 LAPTOP DOES NOT SEEM TO POWER ON. WHEN EVER I PUSH THE POWER BUTTON THE BATTERY LIGHT BLINKS ABOUT 2 TIMES BUT WOULD NOT POWER ON. LAPTOP IS COMPLETELY OFF. HARDRIVE DOES NOT SPIN, DELL LOGO DOES NOT SHOW, LCD SCREEN DOES NOT TURN ON, ALL LIGHT ARE OFF. WHAT COULD BE THE PROBLEM AND HOW CAN I FIX IT?

3 replies

Most likely your power system has been destroyed. Blinking power light is indication of critical power system failure. I am guessing that blinking is indication that internal failsafe has kicked in.
You get this powersystem receives illegal current/voltage. For example trying to charge the battery from wall socket intented for electrical razor (in trains/hotels/etc) which does not have enough Amps to power momster like 5150.
5150 has really poorly desinged power system and there actually was a class action law suit against Dell about it. (They won , google it)

You can try buying a new power supply or if you any of your firends have same model borring one from them to test it. But most likely your motherboards power supply is toast and the laptop is beoynd any reasonale priced repair (repairing costs more that new much better laptop). new motherboard 300$ or more, IF you can find one.

Same thing happened to me and I bought new power supply but it did not help. My laptop worked for a while on battery power, but when the batterys chage ran out it was dead. Now I trying to Hack worthless laptop so that it receives power from powersupply via the battery socket... most likely I will end up burning the motherboard but it does not matter the laptop is dead anyway (battery is 14.8V and powersupply is 19.5V ) I could try 15V power supply if I can find one (I think dimension models have 14.8 powersupply)
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power regulator IC of your dell 5150 is defective, this cause why it only powered up by battery.
Maybe it is a battery problem or some hardware malfunction (try removing hdisks , RAms ettc. )