HP G72-250US OS/Software :: Screen Stays Black On Power Up - Hear Fans And Light Is On But No Go

Sep 6, 2014

I'm working with a HP G72-250US Notebook and using Windows 7 64 bit Intel core(TM). M350@2.27ghz2266 mhz 2 cores

Is it the Mother board or  the Harddrive? Replaced screen due to vertical and horizontal lines in color. Computer worked normal at times. I thought it was fixed but then while doing a HP diagnostic program the computer said to shut down because the batttery situation might harm the computer . I tested the AC adapter. I installed a new battery and at first it was working again. I updated and scanned with AVG & Malwarebytes. Did another HP diagnostic and at one point was told to restart. It never lived again to this point.

All it does is light up the power light and W/LAN (F 12). Blue lights are on at times indicating Cap locks and number locks are engaged. I did do a complete factory restore before it came to this point and updated the bios (to F 37) and downloaded updates for chipsets and Graphics also.(after screen installed) The only thing it does now is make noises at startup and power indicator is lit  now Light keeps cycling.(light off, light on) in ten second intervals.

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