hp pavilion a1000 Won't boot up

bara858

Honorable
Dec 4, 2013
9
0
10,510
In need of help, when i turn on the computer fans start running and screen turns on but after a couple of seconds the tower shuts down. I already tried cleaning it and removing the ram and putting it back in but no luck is there anything else i can try?
 

bara858

Honorable
Dec 4, 2013
9
0
10,510
The psu has a green in the back thats on as long as its plugged in. i tried doing that just now but it had no effect the computer turns on but doesnt boot it turns back off in a matter of seconds so i cant really go into the bios would something other than the psu be wrong with it
 

bara858

Honorable
Dec 4, 2013
9
0
10,510
What else can be wrong. I would just like to work on it and not spend much to get it working again in order to save all of my things i had on there so that the kids can play with it
 

bara858

Honorable
Dec 4, 2013
9
0
10,510
i have an extra psu but it has a 20 pin connection to the motherboard and the psu on the hp needs a 24 pin connection is there any way i can adapt it or buy something to convert from 20 to 24 pins