PowerBook showing no signs of life other than LED turning on

Hello! I have this nice powerBook G3 Wallstreet & the last time I used my laptop is when I erased a partition from my HD & then later cleaned it with isopropyl alcohol with the power cord disconnected. Later when I wanted to turn on the laptop, it did turn on, but with the diskette with the question mark icon. I loaded a MacOS 9.2 CD in to do a fresh install & re-booted the laptop by holding down Shift + FN + Control + Power as it told me in the sticker on the back, after that, I pressed power just to see that absolutely nothing was happening, not even the drive was spinning up, no light, no display, no nothing. I tried plugging it off & leaving it sit for 15 minutes straight. After that, I plugged it back it, & the green power LED lighted up & turned off 3 seconds later (always happened before the incident because the battery is dead) & tried powering it on again, but still nothing. I tried pressing the key combination that I used to power off the laptop (Shift + FN + Control + Power) & the LED lit up again letting me know the power had been reset, but it still doesn't boot up.

That's as far as I went, it just won't boot up, resetting the PRAM with Option + Command + R + P doesn't work neither, as you need the computer to boot up for that.