|"I tried to change the OS to Debian, but it was way too heavy"|
233MHz CPU with 32, 64 or maybe 96MB RAM? Of course it "bricked". Boot off a Win98 or WinME boot floppy, run FDISK & wipe out all partitions, then create a new one. Then run FDISK /MBR. After that, you should be able to format & install another OS. I suggest Win98SE or WinME. I wouldn't bother with Win2K. If you want to experiment with Linux, try Puppy or Damn Small. Anything else will be too much for it.