I have installed Raspbian from NOOBS onto Raspberry Pi. The RPi booted fine until I tried to install a program. Now I think it is trying to run a script on boot-up which is causing it to fail.

If I hold shift - I get back to the GUI desktop (I assume this is in recovery mode). How do I now get the RPi to boot up without holding the shift key?

Sorry - totally new at RPi and Raspbian

Thanks Scott

  • What program did you install?
    – lincb
    Mar 4, 2014 at 12:51
  • I was trying to install a UPS software (UPSilon 2000).
    – ScottC
    Mar 4, 2014 at 13:07
  • Have just tried a trick that I found on the web - which seems like it will get me back to square one (which is what I want)... When I was pressing left shift button - I don't think anything was happening - and was somehow managing to get back into the GUI... but now I have swapped the keyboard to the top USB port, and the mouse on the bottom one, and have held down the shift button - and now I think I am truly in recovery mode. Noobs is now asking me which operating system I want to install. This will hopefully erase my problem, and then I can start all over again. Not an issue in my case..
    – ScottC
    Mar 4, 2014 at 13:12
  • ok - that did not work.
    – ScottC
    Mar 4, 2014 at 13:24
  • Am still getting "timeout waiting for hardware interrupt" errors.
    – ScottC
    Mar 4, 2014 at 13:26

1 Answer 1


My problems with the Raspberry Pi booting up have now been resolved. When booting up using Raspbian OS - I was getting heaps of "timeout waiting for hardware interrupt" errors. The screen would scroll really quickly, then timeout errors would ensue, and it seemed like an endless loop. At first I could not get into recovery mode, but once I eliminated a 7-port powered USB hub from the equation, it would respond to the shift key (ie. by plugging keyboard and mouse directly into Rpi USB sockets). I tried installing some of the other operating systems that come with NOOBS, and I did not experience the hardware interrupt errors with the other operating systems, but when I installed Raspbian - the GUI would fail to boot. ANd I really wanted to to stick to Raspbian.

I did manage to get into the GUI every now and then by jumping into and out of the config file (in recovery mode), but this was not satisfactory. I then experimented with booting without anything but an HDMI cable (and power) attached. Suddenly, the GUI loaded without issue. I could then insert mouse and keyboard after the OS had booted up into the GUI. I booted up with mouse inserted on its own. But when I tried keyboard on its own - the problem returned. So this pointed to an issue with the keyboard. I was able to boot up without the keyboard and then successfully use the keyboard by plugging it in after boot up. I then tried the RPi attached to a monitor instead of TV - by using a HDMI to DVI cable. I had no problem booting up with keyboard attached.

So I am putting my problem down to a combination of a - rollup keyboard used in conjunction with a TV (using HDMI cable).

Possibly a power related issue - maybe the combination of keyboard and TV was drawing too much current from RPi on bootup? Who knows... but my problem is solved. I now can boot up successfully without any further issue.

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