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There are several models of this notebook depending on the processor. Some only have one fan, otehrshave two. When operating the fan should start running. I have the higher spec R3000 and my fans start soon after the machine is turned on and sometimes throttle down if I have no activity. Upon starting to use it, they soon start again. Considerable hot air will come out the right back and side.
DO NOT block the air intake(s) on the bottom of the unit !!! You can burn up the processor.
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.
If your volume buttons don't work either this should help. Place your laptop on a table and press down on the lower right of the computer(under the arrows near the microphone and headphone symbol) or clamp down on the battery compartment (center). The blue light on the corner should illuminate, if it's off press the network button while putting pressure(the indented one on the right front edge) you shoud hear a double ping sound. I put a thick felt pad between the battery and the computer andnow everthing works. I know it sounds really STUPID but it works.