You didn't give us much information to work on. What DOES happen when you boot ? Any error messages on screen ? Does it work in text mode ? If you can log in tell us what /var/log/XFree86.0.log contains.
Wenn mein Knoppix stecken bleibt und ich es abwürgen muss bootet es nicht mehr in die grafische Oberfläche!!
After I shut down my computer because my Knoppix does not react it doesn't start in X11 mode any more.
Please help me!!
You didn't give us much information to work on. What DOES happen when you boot ? Any error messages on screen ? Does it work in text mode ? If you can log in tell us what /var/log/XFree86.0.log contains.

Amiga Model 1080 RGB color CRT monitor - Parts Or Repair - Doesn’t Power On
$100.00
Microbotics Starboard 2MB + SCSI Sidecar for Amiga 1000 Vintage Computer READ
$329.00
RGB2HDMI Amiga 500 UltraLong (Accelerator Friendly) HDMI Games, non-RTG A500
$50.00
Amiga Emplant Emulator Card For Commodore Amiga 2000 4000 3000
$249.00
(10) BOXED Games for Commodore Amiga 500 600 1000 1200 2000 3000(T) 4000(T)
$329.98
Apidya By Blue Byte ~ Original Amiga Game
$90.10
Commodore Amiga 4000 Motherboard Rev B - untested
$225.00
BlueSCSI v2 Internal 50-pin 3.5" SCSI Drive ,Wi-Fi,For Macintosh, Amiga, PC
$52.99
Best FlickerFixer RGB2HDMI Amiga HDMI Games, non-RTG A2000CPLDSlot v2.2
$75.00
ZuluSCSI Compact RP2040 - an affordable SCSI-2 (and 1) emulator w/ USB-C
$45.00