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power comes on. can hear disc drive. acts like when i put disk into it tries to read. light comes on but never nothing on screen. i tried external monitor still nothing. fans come on. but doesnt start. not even bios screen. please help thanks anthony.

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Further diagnostic steps that complement and posts.

A simple, noninvasive check is the flashlight test: in a dim room, hold a bright flashlight at an oblique angle against the LCD. A very faint BIOS/desktop image visible under bright light indicates a failed backlight or inverter; a totally blank panel points to no video output from POST or the graphics subsystem. For the external display, confirm the monitor input and cable with a known-good computer so the laptop-to-monitor link itself is ruled out.

Memory and peripheral isolation are common next steps. Removing nonessential devices (optical drive/disc, HDD if practical) and testing memory modules one at a time in each slot can reveal a bad DIMM or slot that prevents POST while still powering fans and drives. Basic static precautions and power isolation are recommended before opening the machine; document any changes and test after each change.

Watch and record any power-LED/keyboard-LED blink patterns and any internal beeps. Those POST indicators map to fault classes in service documentation and greatly narrow troubleshooting. Given ’s note about the dog on the keys, a stuck/shorted input can still be a factor, but that is only one possibility among display, memory, firmware, or board-level faults.

If the flashlight test plus single-module memory checks and drive removal do not restore video, the fault commonly moves beyond simple field-service fixes (motherboard/video chipset or firmware). At that stage, BIOS-recovery instructions specific to the Satellite P25 or a board-level repair from a qualified technician are the usual next steps.

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Member Avatar for DenisOxon

Whilst external monitor was plugged did you try the function switch that switches between screens ?

Also have you tried brightness/contrast switches ?

Denis

Member Avatar for tass

tryng these . but now that i think about it my chiauwawa had been getting on the desk and may have stepped on keys and shut something off. trying to figure out the functions heeheh i never use them. doesnt seem to work also notice if i flip on the wireless the light doesnt come on say may not be runnig.

Member Avatar for DenisOxon

It is possible keyboard is damaged. Even a drop of water will cause all sorts of problems. at startup.

First remove power cable and battery.

If you look round edge of keyboard you should find a number of clips, probably three or four on each long edge. If you are careful you can get keyboard out. Then disconnect cable for keyboard.

Then put battery and powerlead back and plug in an external keyboard and switch on. See what happens.

THIS IS DONE AT YOUR RISK

Denis

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