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Computer wont boot!!

This is a discussion on Computer wont boot!! within the Motherboards, Bios|UEFI & CPU forums, part of the Tech Support Forum category. I have an hp pavillion 520n. Its been sitting in my attic for quite some time now. I finally brought


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Old 12-28-2010, 07:44 PM   #1
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I have an hp pavillion 520n. Its been sitting in my attic for quite some time now. I finally brought it down and restored it with some new parts. Main parts i replaced were the cpu fan and 2 new hard drives. When i plug it in i press the button and everything turns on just fine. Fans run, cd drives run, HD runs etc, but i get no picture on my moniter. I know my moniter isnt bad because i tested it on another computer. My computer has a vga card already and a video card installed already on the mother board.. Im a newbie to all this computer stuff. Any help would be greatly apreciated... Thanks in advance...
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Old 12-28-2010, 07:46 PM   #2
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oh i also reset the CMOS and still no luck with that..
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Old 12-28-2010, 07:51 PM   #3
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Pull it apart and test to isolate the problem. https://www.techsupportforum.com/f15/...em-262998.html
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Old 12-28-2010, 09:22 PM   #4
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Okay, i did the bench test and no luck getting a post screen. I have a green light on the motherboard and the cpu fan spins. I installed 1 stick of ram as instructed. The moniter has an orange light next to the power button.. Idk i can't identify the problem..
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Old 12-28-2010, 10:31 PM   #5
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Quote:
Originally Posted by Dogg View Post
Pull it apart and test to isolate the problem. https://www.techsupportforum.com/f15/...em-262998.html
DO you know what could be the problem, if i fail to enter post screen?
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Old 12-29-2010, 05:39 AM   #6
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Remove all the RAM and try to boot. You should hear a consistent single beep from the Mobo speaker.
After doing the Bench Test precisely as posted and you get no post you have to substitute parts to determine what is defective.

*If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.*



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Old 12-29-2010, 11:13 AM   #7
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Okay, i removed both sticks of ram and tired to boot nothin.. Theres really no parts to substitute besides the cpu fan..
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Old 12-29-2010, 11:29 AM   #8
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I actually did everything for the bench test, but the keyboard. All i have is a usb keyboard does that matter? could that be whats preventing me from entering the post screen??
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Old 12-31-2010, 05:55 PM   #9
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Inspect the motherboard for any damage capacitors. (bulged,domed,leaking)

Replace the CMOS battery.

Do you have another PSU that you can try.

Did you remove the graphics card and attempt all steps using the integrated graphics?

With the RAM removed you should have system beeps emitting. The fact that there

is none present could be indicative of a bad motherboard.
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Old 01-03-2011, 04:45 AM   #10
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I have another power suply i can use, but idk why it would be going bad because the fan moves. I replaced the cmos battery already. Theres no speaker connected to the motherboard? idk notice any damaged parts..
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Old 01-03-2011, 05:10 AM   #11
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Quote:
I have another power suply i can use, but idk why it would be going bad because the fan moves
Moving fan does not mean the unit is putting out the proper amount.

Quote:
Did you remove the graphics card and attempt all steps using the integrated graphics?
Was this step done?
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