Horizontal lines on laptop screen and BSOD.

September 4, 2012 at 12:58:09
Specs: Windows 7, intel Q9000 quad core 2Ghz/4 giga
Hello all, i have a laptop Hp pavilion dv7-2140ev. It worked fine till last night .Today in the morning i turned it on , and it opened normally but it had horizontal lines on screen(bios was clear , lines appear at welcome of win7), so i restarted it and it was the same plus it showed me an error i think it was( Radeon Graphics family has stopped working and it's recovered) or somethink like this. and after this message screen was filled with weird colourfull shapes and it gave me a blue screen of death, then it restarts and repeats. though it works fine in safe mode. i write this from safe mode plus network support. any idea what would be the problem?

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September 4, 2012 at 15:14:07
Sounds like you graphics chipnis over heating. What you could try is cleaning out the vents on the underside of your laptopvand along the sides. Use a can of compressed air to blow out any dustvin the vents. Also locate the vent that covers your fan, blow some air into that too.

My wife has a tendancy to use her laptop in bed, she puts it on the douvet and after 15 or so minutes she gets funny shapes on her screen too. This is because the dovet covers the air vents and thus the temperature inside the laptop increases. If you use your laptop in this way too this could also be a possible contrbutor.

Note: when using compressed air you must ensure you hold the can upright at all times. Otherwise water may squirt out. Move the laptop around and keep the can in an upright position.

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September 4, 2012 at 17:45:02
No, no this can't be my problem, it used to overheat and restarting from this and i know laptop "anatomy" so i opened it , disassempled it and cleaned it from all the dust.It had been working smoothly for about two months now and in high performance . When i m using it, it is overlifted by some books , so the fan side is on air. One friend mentioned Ram problem ( his solution was to change the place of rams- top and bot) , so i did this and it had the lines still but it booted normally (no BSOD) for one unique time. now it is the same again.

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September 5, 2012 at 08:19:43

I would suggest you to follow the below mentioned steps which could fix the issue:
• Verify that the BIOS and Video drivers are the latest.
• Connect to an external monitor (if available), when the external monitor does work it may be an issue with the Operating System. Verify that all the drivers are the latest.
• Check if the horizontal lines appear in the System Setup (BIOS).
• Run LCD diagnostics.

Please reply if you have any further questions.

Thanks & Regards
Debbie B

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