Question about HP Pavilion a1240n (EG136AA) PC Desktop
New power supply not turning on computer must have connected something wrong
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Posted on Jan 02, 2017
I would check your fans first , a failed cpu fan will cause the computer to overheat and not start.then cables, add-in cards and memory to be sure ones not halfway in it's slot.. then i would suspect the power supply, they can be missing power on a rail and still have a light on the back. you can buy a power supply tester at tigerdirect for 20 dollars. once all this is checked , i would look to the motherboard..
hope this helps in the decision making process..
Posted on Oct 29, 2008
OK, this can be a hard thing to fix. Most of the time, the power supply is the first thing to go on a PC. However, when you stated that the motherboards LED came on after you unpluged the PS from the motherboard, it leads me to believe that the motherboard is the issue but the power supply might be outputting higher voltages and the motherboard might be shutting down. Since the power supply is cheaper then most motherboards, I would recommend getting a new one. Check ebay for a new power supply. It should be about $20 with shipping. If the same thing happens, then you need a new motherboard...
Posted on May 30, 2009
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