Computer won't acknowledge power souce - shuts down
I've had the mother board replaced (as of today) for the third time in one year. The most recent was Feb 2008. But, its all under an extended warranty.
The problem is, while the laptop is on - the battery icon comes on showing its loosing power and very quickly the laptop shuts down. The problem is, I am plugged in. Each time this has occured, HP determined the mother board needed replacing, a new battery and A/C adapter. And now I'm on my third mother board, A/C adapter and new battery.
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#1 on the list for this is shut down from over heat due to CPU fan not running or CPU overheat. Check to see if your CPU fan is turning on when your system is powering up. If its not.. thats your problem (get a new fan)... Even if it is it could mean the fan is not properly contacting the CPU with thermal paste. If this is the first time you\'ve powered the system up, your next step is to go out and get some thermal paste and put it under the CPU fan, if you\'ve been running the system and this problem just cropped up.. skip the thermal paste, its already there. #2 Next possibility is BIOs power settings are incompatible with your hardware. For example the frequency on the CPU is set higher then it can operate and its over heating. Some systems will automatically shut down and restart with default settings others you have to get into and set to default. can you get into BIOS? Can you reset your BIOS settings to defaults? Check your mother board manual. #3 A compenent is shorting out your system and needs to be replaced. Is the system posting prior to shutdown (beeping once on start up?) If its beeping more then once that means something else and you should read your manual. If its not beeping then its a short somewhere and you can bet you have a bad part in the system. To identify which part it is you can either disconnect things (RAM, Drives, vid card, PCI cards,ect) one at a time, attempting to start the system after each one or you can take everything but the bare bones out and try to start it. I usually take all the RAM out but one stick and start by testing them. Your RAM is the most likely place for a problem in this situation. #4 If you\'ve striped it down and it still can\'t get a boot (with no post beep). You need to replace the mother board.
Hit control alt delete and look and see how many running programs you, most of the time it is a background running program that locks up the shut down process. On average you should have only 60 to 70 programs running. Reduce these and your start ups and shut downs will be much quicker, there are third party software that can enable you to do this with ease, or you can search google .
i've seen this on g.e. machines,you have a bad computer board located on the back of the machine,one time my customer went to get a cup of water and when he pushed the dispenser the compressor would shut down,another thing i've seen is the fans speed up and slow down or not run at all.everything goes through the mother board,the common board is a wr55x10942 but you have to send the model number and i can look up your machine and tell you what board goes in it or call your parts store,give them the model number and they will sell you the right board.good luck.
remove ur power supply socket from the mother board short the pin green and black in the connector if the smps start no problen with the power supply then the problems lies with ur mother board wiring or fault in your mother board if your mother board has secondry power fix it correctly to mother board sock et with has 4 pin if its not working cousult a chiplel engineer the fault lies in the power supply of the motherboard