Kernel panic - not syncing.

[vistawanted]

Dear all,

I am using CentOS 7 on PC with a hardware configuration of:
Mainboard: Asus P7P55 LX
CPU: Intel i5-750
RAM: Samsung 2GB*4
HDD: WD (blue) 500GB
Graphic: AMD HD5450 1GB

Yesterday, when I had typed the password for software-update for few minutes (more than 400 updates, it must not pass downloading stage), all of sudden, the PC directly shutdown and rebooted. Thereafter, the system cannot be started.

More details:
After passing GRUB, the console showed as:
[OK] Started Show Plymouth Boot Screen.
[OK] Reached target Paths.
[OK] Found device /dev/mapper/centos-root.
Starting File System Check on /dev/mapper/centos-root...
[OK] Started dracut initqueue hook.
systemd-fsck[419]: /sbin/fsck.xsf: XFS file system.
[OK] Started File System Check on /dev/mapper/centos-root.
Mounting /sysroot...
[OK] Reached target Initrd Root File System.
Starting Reload Configuration from the Real Root...
[OK] Started Reload Configuration from the Real Root.
[OK] Reached target Initrd File Systems.
[OK] Reached target Initrd Default Target.
[ 10.258225] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00
[ 10.258225]
[ 10.258314] CPU: 0 PID: 1 Comm: systemd Not tained 3.10.0-123.20.1.el7.x86_64 #1
[ 10.258384] Hardware name: System manufacturer System Product Name/P7P55 LX, BIOS0714 01/19/2010
[ 10.258470] ffffffff817f22e8 0000000083d2e22d ffff8802340e5e28 ffffffff815e2b0c
.........
[ 10.259187] drm_kms_helper: panic occurred, switching back to text console

Since here, the system hangs and no responses against keyboards.
In GRUB, I realized that the partition for CentOS system cannot be recognized, i.e., "ls" command returned unknown filesystem without UUID. Meanwhile, SWAP partition was detected as "Filesystem type xfs".

Would you help me out of this problem? Many thanks.

[gerald_clark]

Make sure your fans are running.
I would run memtest86 at least overnight.
It sounds like a RAM or thermal failure.

[vistawanted]

Make sure your fans are running.
I would run memtest86 at least overnight.
It sounds like a RAM or thermal failure.

Many thanks for your suggestion. Both the CPU and case fans works well. And I have run memtest for 8hr, it showed pass5 and error0. Thus, it could not due to fans or RAM problem.
Would you give me more comments?