Having problems with your Dell Latitude C640 Notebook ?

Screen turns dim

\015 Whenever my laptops is on charging mode ie AC,my screen turns dim and dull..and turns normal whenever the charger is removed.please someone should help me out.\015

Answers :

Hold down the Fn key and press the UP arrow key when this happens.
Omg thanks haha been fixxing up my "new" d630 had many issues with it trying to play basic games such as warcraft 3 the screen being dim was annoying^^... for others having issues with d630 gaming i suggest rolling back your display driver from A07 to an earlier A06 version you will no longer have random blue screen crashes.. also i8kfanGUI allows you to be able to control your fan to high mode which dramaticlly helps this model function properly and delays the dreaded "time to clean out the dust" time of year :p
Repair Help & Product Troubleshooting for Dell Latitude C640 Notebook

Tips for a great answer:

- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.

Suggested Questions/Answers :

HP pavilion notebook screen turns black after flickering


You most likely have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-To determine if you have a LCD screen or video card p ... HP Pavilion DV5Z PC Notebook

Compaq Presario F500 Monitor Problem


You need to determine whether the fault is the video/motherboard or the LCD screen on your laptop. \015\012\015\012You could have a defective screen - a defective inverter or a CCFL lamp.To determine if you have a LCD screen or vide ... Microsoft HP Compaq Presario F553US Notebook

VERY Dim screen after a drop


Have you tested it with an external monitor?\012I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:1. When you turn on the laptop, the sc ... Sony VAIO VGN-NS190J/S Notebook PC

LCD monitor display not working


The problem you have is with the backlight lamp, which is not turning on. When this happens only because lamp is faulty, Acer LCDs have a security switch that will not turn the screen on at all and will return a blinking light on power on led , as di ... Acer AL1714 17" LCD Monitor

Monitor Randomly Turns Black


I have exactly the same problem with my Benq FP71E+ ..\015\012\015\012What i found is a temp fix is this :\015\012\015\012When monitor dims and goes black i turn it off , hit the bottom left side (near the BENQ logo) turn it o ... BenQ FP71E 17" LCD Monitor

I got problem with dv2000 HP laptop, I got very dim windows, I have change inverter, monitor, and check the lid switch, still have some problem,when connect to external monitor, everything is OK, could you tell me is there any wrong caused by mother board?? Tks a lot!!!


IT's the GRAPHICS CHIPSET ON THE MOTHERBOARD.ive ran into simular casses where" DV2000 notebook by HP has some serious issues. I just recently picked\015\012this laptop up from a customer who wants me to fix it. And to be hone ... PC Laptops

HP DV1000/screen turns on then turns off.


You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-To determine if you have a LCD screen or video card problem ... HP Pavilion dv1000 Notebook

No image on monitor


Looks like the Video card, or Video chip has bought the farmTry hooking up to another monitor to confirm where the problem is. ... ViewSonic VX922 19" Monitor Flat Panel

Intermittent monitor outages with MPC Transport T1200? Should I replace monitor or check wiring and how? New-to-me laptop, upon powering on no picture was visible, could hear all normal sounds of windows booting up. on closer inspection the picture WAS visible, but too dim to make out more than the gray of dialog boxes, the white background of my computer, etc. wiggling the monitor will temporarily fix the problem if held at precisely the right angle. I don't see any screws near the hinge tha


Looking through your owners manual, there are several keyboard shortcuts that can at least increase the appearance, although it sounds like a simple connection problem. Very hard to find a repair manual, although most transport laptops have a very th ... MPC Computers TransPort T1200 Notebook

Dell latitude D600 display blacks out, showing just a ghost image


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 the backlight.If you see a very dim image or flicking image on the LCD screen it mean ... Dell Latitude D600 Notebook

When my desk top appears on screen, the screen suddenly goes blank it also happens in the middle of when i am conacted to the internet


How old is the monitor? Under warranty? If the monitor is an LCD unit and several years old, you might be looking at a new unit--does the screen go black or loose all data and turn blue or white? If it's going black, you can check to see if it ... E-Machines Computer Monitors

Black screen when I turn on my computer


Defective CCFL backlight may has the following symptom: \015\012\015\012Screen flashs on red/pink and off. \015\012Picture stays on in red and slowly be come normal. \015\012Pi ... Toshiba Satellite A135-S2276 Notebook

I turned the my toshiba M50 last night. the next morning i was trying to turn it on, but it was just a black screen. i can hear the sound that it actually turned on but the screen is just black and no any display. please help!


If you see a dim image on the LCD screen it means you have a backlight problem.\015\012Connect an external monitor to the laptop and power it up, if you see a clear image on an external monitor, this means your video card is OK. \015\012 ... Toshiba Satellite M50 Notebook

Dim and flicking last black screen


It sounds like your monitor went bad. It happens. Call around. There are a lot of deals now. Good luck. ... ViewSonic VX1940w LCD Monitor

Samsung 226bw visible flickers just after it is turned on


You may have a faulty inverter or loose power inverter connection. OR You may have a 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 flic ... Samsung 226BW Monitor

My Screen goes black fter a few minutes


You could have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :- To determine if you have a LCD screen or video card problem, rea ... IBM ThinkPad T42 Notebook

Monitor goes blank


Sounds like the back light inverter board is bad. \015\012\015\012It's a very common problem.\015\012\015\012LCD's use four small cold compact fluorescent bulbs to back light the display. (thats what gives the LCD it's brightness allowing you to see ... Dell E153FPc 15" TFT LCD Flat Panel Monitor

Screen dim HP pavilion dv1000


The lid actuator switch may not be working correctly. It's a small switch above the keyboard and led's on either the right or left side. Try pressing it 2 or 3 times to see if the display starts working correctly again. If so, it will need to be rep ... HP Pavilion dv1000 Notebook

Screen flickering when turning on laptop and sometimes the laptop turns on after flickering and sometimes doesn't turn on at all after flickering. Just stays black.


You may have a faulty inverter or loose power inverter connection. OR You may have a 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 flic ... Acer Ferrari 5005WLMi (LXFR506119) PC Notebook

HP dv9000 won't come out of black screen.


You could have a faulty video card, or a faulty inverter, (this supplies high voltage to the CCFL lamp), or a faulty CCFL lamp.Connect an external monitor to the laptop and power it up, if you see a clear image on an external monitor, thi ... HP Pavilion dv6000z Notebook

Gateway laptop- screen went dark but is still on.


You most likely have a defective screen - a defective inverter or a CCFL lamp or simply the video cable needs reseating. After reseating the video cable and the problem is still there then :-To determine if you have a LCD screen or video card p ... Gateway 450ROG Notebook

Can not see anything on the screen


If you see a very dim image or black screen or flicking image on the LCD screen it means you have a backlight problem.Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and ... HP Pavilion dv9700t Notebook PC

Dell Inspiron B130 was black when turned on. Holding flashlight to screen, could see desktop and all icons. Was able to open programs, etc., while looking with flashlight. Replaced LCD Inverter listed for B130. It turned on fine, worked about 2 days, then started flickering, and went black again. Could this be power surge from motherboard, or backlight instead? By the LCD Inverter I purchased working for a couple of days, I felt like that was the problem, but something is knocking it out again.


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: ... Dell Inspiron B130 Notebook

The screen is black.


You could have a faulty inverter or a CCFL lamp, To determine if you have a LCD screen, inverter or video card problem, read this and follow these instructions. Defective CCFL backlight, it may have the following symptom: Screen flashs on red/p ... PC Laptops

Mag Innovision LT982s screen problem


Hi,Based on your post/description, I will initially suspect the inverter and/or the CCF Lamps since as you\015\012posted "dim screen picture" indicating that there is ** backlight(s)\015\012and/or it is **t receiving power from the inver ... Mag Innovision LT982s 19" Flat Panel LCD Monitor
  • Start your question with What, Why, How, When, etc. and end with a "?"
  • Be clear and specific
  • Use proper spelling and grammar
all rights reserved to the respective owners || www.electronic-servicing.com || Terms of Use || Contact || Privacy Policy
Load time: 0.5222 seconds