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Re: my laptop will not come on anymore
The problem appears to be with the mother board, sounds as if it's bee dropped or bumped very hard , that may require the replacement of the intel motherboard, and the cost is around 200.00 to repair, just repaired one with the same problems, working great now, and the customer is happy, also the heating up of the motherboard sometimes causes soldered connections to become weak., I think u r problem will be corrected with the replacement of the board, by a qualified service tech. check on www.consumer depot.com fora motherboard for you inspiron and you might find one very reasonable arround 100.00
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This is a tricky situation, any fluid that ends up inside can cause a cascade effect, hours, days, weeks and even months before the full efects are known. You could end up changing the screen and down the road face major failure in the motherboard. Under the circumstances I would consider a laptop replacement.
If your laptop appears to boot up and the hard disk LEDflashes, then the problem is probably a back light fault. This can be a faultyinverter or a faulty CCFL lamp. Please click on this link and follow myinstructions to identify the fault and possible fix :- http://www.fixya.com/support/r3598095-faulty_laptop_lcd_screen
One thing to try is if you can, connect an external monitor to the computer. Turn it off and then back on with the external monitor on. If video on the external monitor then the problem is with the laptop monitor most likely the FL inverter or the lcd itself. If no external video, it is most likely a motherboard problem.
You possibly have a LCD screen failing, but to be 100% sure, you should hook your laptop to an external monitor, and see if the display is good . Any desktop monitor will work. If your display is good, you know your LCD on your laptop is failing, and if it is the same display as your laptop, you know you have a video chip problem on your laptop motherboard.
The backlight is the light bult that illuminates the screen. Before it finally goes out completely it will turn your screen a pink color on startup (and then usually become brighter and the pink fades). It is also possible that the backlight, also called a Cold Cathode Flourescent Light, CCFL, died an immediate death. But usually they take a while and signal with the "PINKNESS" first. If you found that your computer is working just fine connected to an external monitor (and you moved the base of your laptop around while connected to the monitor to be sure and left the computer on for a long time) then you have verified that the screen is the problem. It is usually two things: (1) the inverter, a circuit board that increases the voltage to supply the LCD which eats around 700 volts (yeah baby); or (2) the backlight itself. The first problem is a relatively easy and inexpensive fix. You can find how to replace an inverter by downloading the Hardware Maintenance Manual for the T40, T41, etc., from IBM/Lenovo's site. Replacing the backlight itself, a bulb that is like a strand of speghetti and even more delicate, is a tougher job. I would suggest purchasing a replacement screen in that event rather than replacing the backlight yourself. (The HMM probably does not show you how to replace the backlight/CCFL as it is a potentially dangerous job.) That suggestion assumes you can find a cost-effective replacement screen and do not mind opening the TP and putting the new screen in. At least look at the HMM to see what is involved. Good luck.