Question about HP Pavilion dv9207us PC Notebook

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HP Pavilion dv9207us DISPLAY PROBLEM [BLUE SCREEN PROBLEM]

Dear Reader
Actually i used pen drive of my friend and after few hours there was a flickring on my screen, i suddenly removed the battery and again restared the laptop, it worked fine but during my search for virus after 15 min of crash the laptop hanged.
i repeated the same procedure and till date i am getting a grey contrast sreen on my laptop.
but i tried with external 14" samsung VGA monitor its working fine, every hardware is working.
i have tried downloading the nvidia driver but it show a blue screen problem]
i am unable to restore to factory setting using F11 and recovery disk.
please help me,
i will be highly obliged if someone know how to rectify the same
thanking you
sundeep

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  • folly71 Nov 16, 2008

    sounds like the same problem. it started just after trying to connect to tv to play a movie. have tried to reinstall driver as suggested by hp but it reports "the Nvidia setup program could not locate any drivers that are compatible with your current hardware. setup will now exit."

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Safe mode roll back driver if cant roll back uninstall in safe mode, then deleting driver info, so it does not reinstall.

Posted on Jan 20, 2012

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Why does laptop screen flicker and sometimes screen goes black?


If it were I, I or a friend with basic skills, would open the laptop, and check it out myself. Save $$$$$$$$$

JMHO

HP Support > Pavilion dv2910us Notebook PC > Main Support page,

http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&lc=en&dlc=en&product=3747188

Click on Manuals in the right side list.
Scroll down, click on -
HP Pavilion dv2500 and dv2700 Notebook PC - Maintenance and Service Guide

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the file name it may take up to 30 seconds, before the first page comes up.
(Took 10 seconds just now using a medium speed DSL connection )

Primer:
An LCD screen cannot produce light by itself. It needs an addtional light source.
A Backlight is the additional light source.

A Backlight can be a CCFL, or a series of LED lights.
The HP Pavilion dv2910us Notebook PC uses a CCFL.

A CCFL is a Cold Cathode Fluorescent Lamp.
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale.

(Usually 2mm Wide, by, close to the height of the LCD screen)

A screen Inverter converts the power (Electricity) from the laptop, for the Backlight, and LCD screen.

90 PERCENT OF THE TIME the fault can be attributed to a bad screen Inverter.

The screen Inverter is located behind the Display Bezel, and mounted to the bottom area of the LCD screen.

{The Display Bezel is the thin piece of plastic in Front of the LCD screen, and surrounds the LCD screen, in front }

Example of a Pavilion dv2910us screen Inverter,

http://www.batterycentury.com/hp-pavilion-dv2910us-inverter-p-177051.html

Wires in a cable with a connector on the end, plug into the screen Inverter, and come out of the screen Inverter.
The connectors are different so there is no mixing them up.

A) Remove ALL power. Remove the AC adapter (Charger) and Battery.

B) Follow Anti-Static Precautions.
Work on a table. Not on a bed, couch, or directly on a carpet floor.
If the table is on a carpeted floor, refrain from swinging your feet across it.

If you do not have an ESD wrist strap available, (Average cost $3 to $5),
at least place a large metallic object on the table (Unpainted), and touch it before, and occasionally during working on the laptop.

Perhaps a large metal serving tray (Unpainted), or large metal knickknack. (Unpainted)

C) Now in the service manual, go to the Bookmarks menu on the left side, click on the + sign to the left of -
Removal and replacement procedures

Click on the + sign next to - Component replacement procedures
Scroll the bar down, click right ON - Display assembly

{You can reduce, or increase the view size.
The ( + ) Zoom In icon increases the view size.
The ( - ) Zoom Out icon decreases the view size }

In the instructions anything that is in blue, can be clicked on to take you to more in-depth info, on that subject.

You are looking to see for one, if the Video Cable connections have come loose.
It doesn't take much, and just viewing with the human eye may not discern if it is loose.

The procedure is to physically check, to make sure the connections are tight.
The Video Cable plugs into the motherboard, then routes under the left Hinge, and up into the Display Assembly.
There it connects to the Back of the LCD screen.

{HP:
Video Cable = Display Panel Cable.
LCD screen = Display Panel }

You have to remove;
1) All power,
2) Switch Cover (Page 79 in the page number box, at the top of the PDF file)
3) Keyboard (Page 75)

,and then you have access to the Video Cable connector, on the motherboard side.

You have to remove:
1) All power
2) Switch Cover
3) Keyboard
4) Display Assembly,

and remove the Display Panel far enough from the Display Enclosure, to physically make sure the Display Panel Cable is plugged in tightly.

Opening, and closing the laptop may have pinched the Display Panel Cable (Video Cable), and pulled one, or both connections loose.

Since the Display Panel Cable is also routed under the left Hinge, it can be pinched enough to damage it.
See if there are obvious signs of damage to the sheath of the cable.

Have someone with a multimeter set to Ohms, check the continuity of the wires, in the Display Panel Cable.

{Average cost for an inexpensive multimeter to perform this test, is around $8 to $12.
Available in a multitude of stores. An auto parts store is but one example. Analog or digital is fine. I prefer Analog }

Have an assistant gently wiggle the cable while checking for continuity, to see if there is an intermittent break.
Indicates a broken wire in the Display Panel Cable.

http://www.pelltechnology.com/HP/Laptop/HP-Pavilion-dv2000-Series/dv2900-dv2910us/HP-Pavilion-dv2910us-LCD-VGA-Video-Cable.html

Cable checks out replace the screen Inverter.

[ The test for a screen Inverter uses a sensitive multimeter. Not something everyone has laying around. Most consumers who do not have this tool, replace the screen Inverter,

http://www.fonerbooks.com/test.htm

The low cost, and ease of access also helps ]

Display Panel Cable, and screen Inverter check out?
Problem is CCFL, or LCD screen.

http://www.pelltechnology.com/HP/Laptop/HP-Pavilion-dv2000-Series/dv2900-dv2910us/HP-Pavilion-dv2910us-CCFL-Backlight-Bulb-for-LCD.html

http://www.ccfldirect.com/lcdtutorial.html

Continued in Comment.

Feb 19, 2012 | Computers & Internet

1 Answer

HP Pavilion dv9207us PC Notebook Will not boot... keeps looping through diagnostics. Will not boot to recovery desk stating "an instruction at ### bla-bla reference mem at ### bla-bla. Memory could not be...


It sounds like a malware that corrupted the system. Try booting into safe mode. That way it runs a very reduced amount of programs and processes so that it won't run into that error you are receiving. In safe mode, you can scan your system for malwares. Once your machine is clean, and the error still persists, it could be a disk error that the malwares left behind. So run the disk checking utility. If the problem still persists after that, then you'll need to do a repair (partial) install of the OS by booting from the Windows disc. That last option is also valid if you cannot boot to safe mode. If any of my suggestions work, please do rate me. Thanks and good luck. Hope it all goes well for you.

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Hi friend,

You need to check *********** board RAM. I think your RAM not connected by motherboard. second thing you need change your RAM Then....

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the blue screen is known as the Blue Screen of death
refer to this article
http://pcpills.blogspot.com/2009/05/escape-blue-screen-of-death.html

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1 Answer

I have a hp pavilion dv6000, when I start the computer windows go up but in a few minutes the screen go to blue and restart again and very slow.


there are alot cause of blue screen and auto restart,,1. some part damage or bad, 2. Operating system damage,3. if you installed some program not compatible in each other files system..

To Do....

chech the hdd..2. use another hdd, if the same, remove the cd room drive. use external cd or dvd room drive..

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I had the same problem, also on a HP Pavilion tx1000.
I solved it by using the driveres from eeti.
Now the pen works great and I'm a happy camper. :)

/Bobtron2000

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Look for the motherboard on ebay,,will be pretty cheap.

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When you get to the normal/safe mode screen, select enable VGA. This will boot your computer using the standard 640 x 480 default. Once you are in windows, then you can go into the display properties and change it to a resolution that is compatible with your screen and computer.

Thanks and pelase take a moment to rate as fixya.

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you should be able to find another optical drive for the computer quite easily and cheaply. Try reinstalling the driver for the dvd. Do not spin your fan with compressed air as you will damage it.

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