Any help would greatly be appreciated. Thanks guys.
LEDs flash a CPU error
#1
Posted 18 October 2011 - 04:06 PM
Any help would greatly be appreciated. Thanks guys.
#2
Posted 18 October 2011 - 08:35 PM
#3
Posted 21 October 2011 - 04:40 PM
#4
Posted 22 October 2011 - 09:27 AM
What is your laptop's model number?
HP DV7 1245dx
#5
Posted 22 October 2011 - 10:04 AM
No as the power on self test (POST) will not complete http://www.poweronselftest.com/if it's CPU related shouldn't the laptop at least kick into the bios?
Have you tried connecting to an external screen via the VGA port, also you said you suspected the backlight, if you shine a flashlight into the screen can anything be seen in the background?
It is also possible that the integrated video chip has failed, a guide to help you with any repairs you may undertake
http://www.insidemyl...n-dv7-notebook/ checking the CPU fan and cleaning out heat trapping dust are examples of tasks you may do.
#6
Posted 22 October 2011 - 12:02 PM
Hi brettxw, while Neil is offline I will pitch in if that is ok.
No as the power on self test (POST) will not complete http://www.poweronselftest.com/if it's CPU related shouldn't the laptop at least kick into the bios?
Have you tried connecting to an external screen via the VGA port, also you said you suspected the backlight, if you shine a flashlight into the screen can anything be seen in the background?
It is also possible that the integrated video chip has failed, a guide to help you with any repairs you may undertake
http://www.insidemyl...n-dv7-notebook/ checking the CPU fan and cleaning out heat trapping dust are examples of tasks you may do.
Thank you for that link!! I was able to clean the built up dust..There was quite a lot of dust built up inside. I took everything apart, and put it all back together and when I turned it on, it still did the CPU error code (single blinking light)..If it was a graphic issue, wouldn't that produce a 4 blinking light error? 3 is memory and I forgot what 2 is but either way would a CPU light code error have something to do with graphics? And if I put a flash light up to the screen, its just black.
#7
Posted 22 October 2011 - 12:14 PM
#8
Posted 22 October 2011 - 01:25 PM
Doesn`t look good for the CPU I`m afraid, does the CPU fan operate correctly, how dirty was the fan when you opened up the case, I am trying to establish if the CPU has overheated, it is also possible that the MB is the cause of the issue with a bad power supply or bad CPU socket causing a CPU malfunction.
CPU fan comes on when started but stops about 30 seconds after start up so I don't believe it was an overheat issue. I hope its not the mobo, gr. What are other ways to eliminate the mobo?
#9
Posted 22 October 2011 - 01:47 PM
to undertake the task as there is very little testing or repairs that can be done by the average user, you can however reseat the present CPU yourself.
Have you tried powering up with only one stick of Ram fitted?
If you decide to remove and inspect the CPU you will need some TIM (thermal interface material) for applying to the CPU before replacing the heatsink, a tutorial courtesy of Digerati http://www.geekstogo.com/forum/topic/292223-thermal-interface-material/
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