Accessing the display cable on laptop. Loose or replace?

You need to take it back to whomever replaced the fan because the wireless button ribbon came loose and it is simply not activating your wireless device as it should. These are ribbon cables typically that are flat and slide into sockets that then lock in place. When it was taken apart to fix the fan, they obviously did not get it slid back in properly or forgot about it all together.

Sounds like the ribbon cable from the mother board to the display has become loose or broken. You will need to take the laptop down to the motherboard to check this connection. If it is tight, you will need to replace the ribbon cable. Some models this is possible, others it is not.

Hope this helps.

Few trouble shoot solution when it comes to these HP Laptop from 08-09.

1). Remove battery and ram. Plug in AC Adapter and insert only ONE RAM into a slot. Boot up and see if this will turn on display (it work on a HP Dv4-1225dx) IF it works then shut down and re insert the two ram and should be good to go :)

2). If your tech savvy remove keyboard and gain access to LCD flex ribbon cable to check if cable is loose (or go on a limb and replace the lcd flex cable ). I would detach it and re attach the ribbon back to motherboard. ( This happen sometimes by chance)

3). Your LCD is shot dead so it will need to be replaced. Current used LCD can range from $40-$50 and new ones with warranty $60-$100. HP is set up for easy LCD removal so shouldn't take more then 30mins to replace, just be careful when handling the ribbon and inverter cables.

GOOD LUCK
(Fix many HP Laptop for friends and family)

It sounds like your flat vga cable has pulled loose inside the panel. Just take the lid apart on your screen assembly and press that flat ribbon cable back in and tape it in place.

You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

• Screen flashs on red/pink and off.
• Picture stays on in red and slowly be come normal.
• Picture flickering with dim display or appear black.
• Picture flickering on and off.

All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out www.lcdparts.net for parts, repair service and DIY info.

HP will not cover the repair if guaranty is expired.

Video card on your laptop is integrated on motherboard, and the repairman must replace the whole motherboard to fix it.

I quote : "Only half the screen works the rest is justa grey colouring." that is more likely a problem with the ribbon cable, connecting LCD, or with LCD screen itself, in some case , as said by the repairman , it can be the video card.
if the repairman did not open and inspected the laptop LCD display , connector and cables, then the problem it is probably the ribbon cable or the LCD panel.
The technician mentioned the motherboard, because that is the most expensive repair service, so that he can cover his back.

Ask a quote to a different technician, see if this can give you different quotes for all possible faults.

The possibilities are:

1 Replace ribbon cable

2 Replace LCD display

3 Replace motherboard.

If light is good and picture flickers, then it is either a bad LCD ribbon cable, or cable not well placed into connector, or a bad LCD display, usually it is the cable.
If picture flickers like light is dimming out and coming back, then it is the LCD lamp, probably in need of replacement.
In some rare case a faulty Video card is causing the problem.
Usually to fix this you need to take apart LCD display and upper laptop plate, to reveal the display cable.

Most Definately a Hardware problem...your laptop is not capable of running the refresh rates that the game requires, Because your Display Panel is Going bad..This is the screen that attaches to the Backlight.. it is connected to a Long Circuit Board.. The Board is the part that is going bad..
I would first check the Display Cable.. it connects to the circuit board i just described.. see if has come loose.. push into place & secure..

Sounds like the lcd itself, or the ribbon cable needs to be replaced.
I'd try that first.
Good luck

First make sure everything else is getting power and operating okay, and that it is only the LCD display that is non-functional.

If you get no video signal or power at all, even at boot time, you probably have a dislodged ribbon cabling or power connection. Usually when LCD monitors go bad they show colour banding or all white, etc., but usually continue getting power.

As a last resort, try disassembling the lower case (with the power disconnected and the battery out of course) to expose the LCD monitor mounts, and then following the wiring from the screen into the laptop and check for anything loose or disconnected. You could also have a loose ribbon cable going into the LCD array, which will require disassembling the LCD cowling and mounts.

If you are handy and comfortable with electrics and find nothing loose, put the battery in and test the power line going to the LCD backlight, which should be getting above 7V (I think). Below that and you either have a bad video controller or bad wiring/solder joints somewhere. Otherwise, if the unit has been dropped or had a hard life generally, it could also be the connections between the LCD connector bus on the monitor array and the array itself. As a last resort, try unplugging and reconnecting all ribbon and connector cables, cleaning the exposed brass coloured runners lightly with rubbing acohol or even a pencil eraser.

Good luck...