Presario R3000 Laptop screen light turns off but unit remains running...ie I can see the window application "very faintly with a flashlight" in the background. I've hooked up to a monitor, its the only way to use the laptop now. Can you help? Is there a fix? or is it a somekinda whatever hardware replacement problem?

let it sit for awhile. then try to power it on. if it powers up and then suts off again, the processor fan is probably bad and needs to be replaced.

Also, take the battery out and tryy to power it up.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Take the computer into a DARK room and start it up.
If there now is a faint image on the screen, then the "LCD Inverter" component of the electronics has failed, and needs to be replaced.
It's a $20 part, but you'll have to pay a certified computer technician for 1 hour of labour to replace it.

have you any other A/V ports out ie Svid etc if so try that via an A/V lead, if that works reset your bios settings to minimal settings, if that doesnt work search the 'net someone somewhere has had the same problem! try shining a flashlight/lamp onto the screen whilst booting up, if you see anything on the screen then your inverter is definatly gone and yes it could still be your inverter! your laptop may have software/hardware issues with an external monitor?

thats the inverter-board... a little thing, that starts the backgound lights... something like $75,00.

Sounds like the auto-dim in the BIOS is set too low. Fortunately the Compaq R3000 allows you to adjust the brightness right from the keyboard. Hold down the [FN] function key while tapping the [F8] key will brighten the screen, while [FN]-[F7] will dim it. The settings are different for running on AC power and battery, so you must do each individually.

Common problem.
There are small VRAM BGA chips.
They needs REFLOW.
Basically motherboard needs service.

first of all it is a laptop or a desktop computer/
if it is a laptop, the answer is no. it is a surface mounted on/off sw. consumer do't have the equipment to rework that.
if it is a desktop. go to radio shack and get a on/off sw and replace it
hop that helps

set the bios/cmos to boot first of your CD drive. get your support discs and restore to original. your hard drive OS has failed and needs to be re-installed. the problem maybe is that when you do that option you will get all your data erased. your solution to that since you can still get the data on the drive when used as external is to back it up. then full restore your system.

if you dont have your restore kit, you can use your Windows OS to fix it, repair option when you boot from CD.

LS-120 SuperDisk drive help Next, connect the power and boot the computer and install the software ... as the computer beeps or pressing and holding CTRL as the computer is booting up.

Good Luck, Read and folow instructions/Please dont for get to Vote/Thank You.

start windows normal and let sit for a while.