acer aspire 5735z power on for 20sec and off without display
my acer apire 5735 switches on for 20 seconds then switches off on its on and on the screen dont show anything
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washington, you might want to give the RAM a good looking over. If the laptop has two sticks remove both then insert one and try to boot up if it does not boot up remove the stick and try the same thing with the other one. Half the time it's faulty RAM that can cause this type of error. Also, you did not make any mention if the fan comes on or i anything has happened to your computer. Also you should get some kind of POST Beep when you remove all the RAM. If you do, at least you know your CPU is doing what it is supposed to do. Good Luck and let us know how it is going.
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After finding no love on the issue by diligently searching. I proceeded to breakdown the entire laptop and testing as I removed piece by piece. I eventually got a full boot after pulling the CMOS battery. I replaced it for good measure as I had already fully disassembled the laptop. The CMOS battery is the typical CR2032, I only had a CR2025 on hand (it is slimmer, but the negative spring was strong enough to not cause me concern).
Disassembly guide here: http://tim.id.au/laptops/acer/aspire%205...
Everything works fine now.
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I have the exact same issue as OP, took off the bottom panel and removed both DIMM and still no beep code or post. The cpu fan spins up then stops, the machine appears to power down and then it looks like it tries to boot again as the LEDs come on and the fan spins for a couple seconds before powering down again.
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My dad just fixed mine replaced the ccfl backlight bulb ! Fiddly job
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