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Re: The computer boots up but the screen is dark.
First check your brightness settings and restart the computer and charge it fully and turn it off overnight and all that good jazz. I'm guessing that this is more complicated though.
Laptops are lighted with small fluorescent bulbs, like the 4ft. bulbs in overhead lighting in office buildings but much smaller. My guess is that this bulb failed or (maybe more likely) the part of the computer that creates the charge for this bulb failed (the inverter board). Fluorescent bulbs require a high voltage to get started (around 600v) and this inverter board turns the 5v charge on the motherboard into the 600v required to start up the bulb.
The good news is that most computers have an inverter board that can be replaced.
You should check ebay and google for specifics on the inverter for the A135, HERE'S ONE on eBay that would not be too difficult to replace if you don't feel squeamish about opening up the LCD case of the laptop. You could also try contacting someone on Craigslist or at your local computer repair shop and have them do it.
Whoever does this should first check to make sure the light bulb is not burned out and that the inverter board is getting the proper incoming voltage.
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regarding your mouse issue frist of all what windows your using if u using win 98 or 2000 and your mouse is USB then u have to insatall usb drivers for that windows Xp then it will conact driectly to the Harware it wnot ask for divers
thne chack your mousr will work if not then you have problem with you windows just ub-date your windows
So, this is a Desktop unit. My advice is this; Take the cover off and try to dust off as much webbing inside as possible.Make sure you take off the power cord when working inside. You will see a fan near the middle of the motherboard. This is your Heatsink/Fan for your CPU. I would bet many pennies this is overheated and may not boot again and if it does it will be unreliable. With your fingers and everything out of the way, plug the bare unit in and turn it on. Make sure the fan on top of the CPU is running. If not, quickly shut it off. I will help you more as you write back and we will get it running.
When you say screen goes very dark when it booted to windows so it means that when you turned on the laptop when the dell logo flashes the screen was fine? if thats the case could you please try this. after turning on the laptop you will see the dell logo flashes immediately keep tapping on F2 and then it will show you the BIOS setup utility, please check if in BIOS setup display goes dark as well. If yes then try this, after turning on the computer when dell logo flashes keep tapping on F12 to boot menu then select utility partition to run the diagnostics. Please run test on the LCD check if display goes black when running the LCD test. Then try this when you sees the dell logo keep tapping on F8 to boot in safe mode check if in safe mode display goes very dark. Try this too, boot in F8 then select last known good configuration check if the settings on your display will be fix. If you can boot to safe mode no problem then uninstall the display or video driver. then restart computer.
You can also try to connect an external monitor if you have one just try to isolate if issue is on the LCD or the video card. If the display is dark as well in external monitor then video card needs to be reseated if fails then replaced. In situation like this most video cards is integrated to the motherboards. So replace motherboard.
do you have a wired or wireless mouse? Have you tried attaching a different mouse to your computer? What is the brand name of your mouse?
Try booting your computer in Safe Mode. To do this, after turning on the computer, press F8 button several times. You will see a screen that will ask you to boot normally, boot in Safe Mode or boot in Safe Mode with Network Connections. Select Safe Mode.
See if your mouse works then.
Check back with me for further help, if needed. There are additional things you could try.
Unfortunately I have some bad news. This means your 'backlight' on your LCD panel is burnt out. This can be fixed, but often it isn't worth the work. If you still want to use this laptop, you can hook up an Desktop LCD Monitor to the laptop and use it like a desktop computer, with a USB Keyboard and mouse, but sadly the LCD backlight is fried. I've lost 2 laptops to this.
When you get the Dell splash screen press the F2 key to get into setup. Use the arrow keys to go down to Drive Configuration and press enter. Go down to Primary Master Drive and press enter. Is the Hard Drive listed there? If not, that is your problem. Press Escape then use arrows to go down to Memory Information and press Enter. Is all of your Memory listed? If not, that could be the problem. Press "esc" to get out of setup. If the Computer does not freeze while in setup I would suspect the Hard Drive is bad. Is the Pointer responding to Mouse movement or does it lock up? In your situation I would first try to Boot from the Windows CD. Write back and I can explain how to do this. If that does not work I would begin to test Hardware. Do you hear any Beeps when the unit is turned on? If you can, E-mail back with more Info.
make sure that theres no loose connection between the monitor and video card at the back of the cpu..then try to boot again the pc..if problem dsnt solved, remove the video card if its pci,try to clean the pins using pencil eraser. then put it back and restart the pc.