Computer won't acknowledge power souce - shuts down

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 .

Motherboard probably has bad capacitors. You should inspect the board for bulging or leaky capacitors.

it is possible that one of the three are going out on the computer, motherboard, harddrive, power supply, only a computer tech could tell which one.

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.

Check you power settings. It is possible that it is set to shut down at 50% battery power.

If it is overheating, that too will cause a shutdown. What is happening at the time of shut down? Are the vents on the laptop being blocked in any way?

take it into a computer repair shop for a proper diagnosis
could be a faulty power supply or failing mother board
check that the power lead is properly connected top the pc

possible graphic board failure , either in separate board or mother board
take it to a computer repair shop for a proper diagnosis

Check your bios battery. It may causing this problem

Hmmm...

Put your hard drive as a slave on another system and delete the desire partition with hard disk tool called Partition Magic or Power Quest. It is Microsoft utility.

This will solve your problem. I am doing same thing when I got problem in any hard drive. It is powerful tool.

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