The laptop will not turn on as the "Z" and hdd light just flashes every time i press the power button. I changed the motherboard and all came back to normal but im wondering if there is a circuit that commonly fails on the motherboard that i can replace and get my old motherboard working again.
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Request you to try following the below steps which might help:
(1)Turn off the computer.
(2)Remove all the external peripherals like AC Adaptor, flash drives, battery, etc.
(3)Press and hold the power button for 30 sec which releases the static on the computer (if any)
(4)Put back the battery and plug in the AC Adaptor.
(5)Let the computer charge for some time.
(6)Try turning on the computer.
If the computer doesn't turn on then check if the computer gives any series of beeps or if there are any diagnostics LEDs shown on it.
lets try something...take the computer and unplug it ..then remove the battery...with the battery set aside plug the wall plug back in and plug that into the wall outlet....then hold down the power button for about 2-4 seconds and let me know if it turns on or if there is any changes then try a different power cable and if that doesn't work then the problem is with your motherboard....you can attempt to reflow the board by taking it all apart...make sure you remove everything that can be heat damaged...cpu ect.....then take aluminum foil and make 3inch soft balls out of it to suspend the motherboard so that it doesn't touch the cookie sheet pan....then bake at 400 for 10 mins...and after that if it still doesn't work then you need to replace the motherboard
Please try to reseat you memory RAM and try to turn ON again. If you want to retrieve Information on your HDD, you can take out your HDD from your laptop and use USB External HDD case. Please refer to link below : http://shop.ebay.com/i.html?_from=R40&_trksid=p5197.m570.l1313&_nkw=HDD+case&_sacat=See-All-Categories
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1. Turn the computer on.
2. Keep tapping F12 after pressing the power button.
3. Advance Boot Menu will come up.
4. Using the arrow keys, select HDD as the device to boot from.
5. Press Enter.
6. If the computer boots up normally, we fixed the issue.
If not, it means that the computer no longer detects the HDD. It needs to be reseated and after reseating the HDD it should boot up normally. If still the computer cannot boot, then, replace the HDD as it already has gone bad.
remove the battery and the power from the laptop.....then press and hold down the power button for 20 seconds ...... attach the AC power only and turn on the laptop this should turn on the system. This drains the capacitors on the system (safety feature of laptops ... quite common)
If this does not work remove the Ram and reseat it ... something has either come loose or the backlight on the LCD has gone bad.
The flashing caps lock is an indication of a failed POWER on Self-Test (POST)
Remove the HDD, Battery, AC adapter, RAM and Modem
Press and hold power button for 15 seconds
Connect AC, see if you get any beep codes. If you do, power off, disconnect power, insert RAM, connect AC and reboot. If system boots, power off and add hard drive. If it doesn't, replace the motherboard.
If the system boots with RAM, but fails to boot with HDD, replace HDD 1st.