The power cord is torn a little not much.....i think i heard from a friend it could be the motherboard? its like it will not charge!! the model is compaq presario r4000!! HELP ME....how much would it cost for a mother board? can they be installed eaisly by me?
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Re: computer will not turn on
You need to check the power cord, borrow, beg or steal one to test. If the laptop does not charge with a different power cord then the problem is elsewhere eg. a faulty power pack or even a faulty connector that plugs into the laptop (borrow a multi-meter to check the voltage of your power pack), also borrow a power pack to test your laptop, before you buy or send it away for a quote/repair.
If you determine that the laptop is faulty, then the cost of replacing a motherboard would not be worth it, even if you found one, it would most likely be a second hand one and how would you know it works, also if you are not technically minded you will it difficult to swap motherboards and it may not work when you put it together.
I suggest you put your money towards a new laptop, it will be faster and better.
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no, there is no internal fuse, unfortunately- because this sounds like a dead motherboard. the aftermarket power supply could have been over-volting, or delivering unsteady power- burning the motherboard.
OR the old power supply shorted, and blew the motherboard's power circuitry, and you were just running off battery power when you first got the replacement.
please keep in mind that, at times, the physical power input jack on laptops can also break, or come loose from the motherboard.
it sounds like the port to plug your cable into the laptop is broken So you will have to remove your computer casing completely and replace your power cord and place a new one for your model then insert it and case up your pc again then it should power on
Maybe it's the DC Jack that the power cord plugs into. If the jack is loose then you will experience the issue you are having.
Maybe your DC Power Jack which is where the power cord plugs
into the computer is bad. Take an ink pen and push the tip inside the
jack and see if the little pin wiggles, if so the jack is bad. You'll have to
take the laptop apart to fix it. Most times it is soldered onto the
motherboard, so you will have to desolder the old and solder a new one.
Unplug the computer and take out the battery.
Hold the power button for ten seconds.
Leave the battery out and plug in the power cord.
Press the power button.
If the computer turns on, put the battery and everything should now work.
This has solved every "laptop not turning on problem" for me and my friends.
are there any lights on the laptop when its plugged in like the charging light , does the power ***** have a light on it that turns on if neither of those turn on then its hyour power adapter thats it. if they do turn on msg me back
sounds like the power connector inside the computer finally gave out. Bad news is most likely it is built onto the motherboard which means it has to be replaced. If you are no longer under warranty this might be a little expensive to fix.
I would probably take it into a repair shop and get a quote for a new motherboard for it.
There are no internal power supplies in laptops. What has most likely happened is as your laptop fell it either landed on the part of the power cord that was sticking out the back/side of the computer or the tension was so great on the plug from it falling that the power supply connector on the motherboard has broken loose from the motherboard. I have seen this happen a lot. This is not a job for an amatuer. It takes someone with knowledge of laptop repair and motherboard repair. In your best case scenarios either the little strip that contains the power button has popped loose and is not making contact (seen this happen in one case) or the power supply adapter (not part of the laptop) has been damaged and torn some wires. In the first case just try to push that power button strip down on the laptop first to see if it will snap back in place. If you can find someone else that has the same adapter you can ask to borrow theirs for a few minutes. Medium case scenario is that it has broken the solder loose and just needs to be resoldered or a new power plug soldered in. Worst case scenario is that it has cracked the motherboard, which will be expensive to fix (it would have to be replaced). Continuing to try and use it in this state (unless it is the best case scenario) will further damage the motherboard as the electricity will start jumping to places it should not go and eventually destroy the motherboard.