Whenever I power up my Linux system, it starts and reboots continuously. All I can see is the logo.

i have some details but i cann't understand please help and the details are below

UBIFS: recovery completed
UBIFS: mounted UBI device 0, volume 0, name "data"
UBIFS: file system size:   278562816 bytes (272034 KiB, 265 MiB, 2159 LEBs)
UBIFS: journal size:       13934592 bytes (13608 KiB, 13 MiB, 108 LEBs)
UBIFS: media format:       w4/r0 (latest is w4/r0)
UBIFS: default compressor: lzo
UBIFS: reserved for root:  4952683 bytes (4836 KiB)
<30>udevd[1184]: starting version 3.2.5
<27>udevd[1184]: NAME="%k" is ignored, because it breaks kernel supplied names, please remove it fro
<30>udevd[1191]: starting eudev-3.2.5
Checking partition consistency
Initializing random number generator... done.
Starting system message bus: done
Starting rpcbind: OK
Starting network: eth0: Freescale FEC PHY driver [Generic PHY] (mii_bus:phy_addr=0:00, irq=-1)
udhcpc: started, v1.27.2
udhcpc: sending discover
PHY: 0:00 - Link is Up - 100/Full
udhcpc: sending discover
udhcpc: sending select for
udhcpc: lease of obtained, lease time 1468
/usr/share/udhcpc/default.script: Adding NTP server
restart: Unknown instance: 
Starting nginx...

closed as off-topic by vidarlo, user535733, Melebius, Organic Marble, wjandrea May 20 at 13:44

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "This is not about Ubuntu. Questions about other Linux distributions can be asked on Unix & Linux, those about Windows on Super User, those about Apple products on Ask Different and generic programming questions on Stack Overflow." – Melebius, Organic Marble, wjandrea
If this question can be reworded to fit the rules in the help center, please edit the question.

  • 2
    Does "linux OS" mean Ubuntu? Or something else? Exactly which version? Which kernel? – user535733 May 17 at 10:34
  • 1
    kernel version and Linux flavour: Linux this is the detail i got from Serial print – subbu May 20 at 13:24
  • 2
    Please specify what your Ubuntu version is. – Organic Marble May 20 at 13:39
  • 2
    I am sorry, a kernel version below 3.0 means this is not a supported version of Ubuntu and your question is off-topic here. – Melebius May 20 at 13:43
  • 1
    This site is only for Ubuntu. – Organic Marble May 20 at 13:43

This particular problem is frequently caused by a bad RAM stick. If there is a bad RAM stick something in the onscreen boot messages will usually report it, however there might not be enough time to read all the boot messages because the computer reboots after 64 seconds. Even without reading the boot messages it is possible to troubleshoot this problem by removing the RAM sticks one at a time if there are more than one RAM sticks, and testing if the computer is able to boot normally when one RAM stick is removed.

If you have successfully found a bad RAM stick, the next thing to do is to remove the RAM stick from the computer, and take it with you to the computer store when you go to buy a replacement RAM stick to make sure that your new RAM stick will be compatible with the old one(s).

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