{nav icon=home, name=Main Page > icon=wrench, name=Troubleshooting > Fixing broken system upgrade} Fixing a failed/partial system upgrade --- == Problem 1 == System CAN boot but GNOME does not start. == Solution == 1. Press {key Ctrl+Alt+F2} to open another virtual terminal, you will get this screen: {F53541, size=full, alt=tty1} 2. Login by entering your username (press {key ENTER} afterwards) and then enter your password (press {key ENTER} to login): {F53543, size=full, alt=tty2} 3. You are now logged in and you should see something like this: {F53545, size=full, alt=tty3} 4. Type in the following command and press {key ENTER}, and then enter your password and press {key ENTER}: {icon terminal}`sudo dpkg --configure -a`: {F53547, size=full, alt=tty4} 5. When the above command finishes, run the [[Recommendations/Upgrading packages | command to upgrade your system again]]: {icon terminal}`sudo apt update && sudo apt full-upgrade` 6. Re-install the `pureos-desktop` package: {icon terminal}`sudo apt-get install pureos-desktop` == Problem 2 == System CANNOT boot at all, only black screen after disk unlock is shown. == Solution == 1. Restart your computer, wait until BIOS/Coreboot messages disappear and press ESC right away to enter the boot loader menu. 2. Use {key up} and {key down} keys to navigate, select //Advanced Options// menu item and press {key ENTER}. 3. Select one of the older kernel options from the list (lower on the list) and press {key ENTER} to boot it. 4. If you manage to boot into graphical interface, open your terminal and run: {icon terminal}`sudo update-initramfs -u` 5. Restart to see if it will boot normally.