Endless boot cycle

Hi and thanks for any help... So my 18 month old machine here will not stay powered up. I was having no problems with anything, changed nothing, no overclocking. Now, when I try to power up, the system comes on for about 2 seconds, then shuts down. 5 seconds later, it tries to power up again, the shuts off after 2 seconds. It will do this forever if I let it and will not boot under any circumstances..
I have tried cleaning and reseating every connection. The computer does not see to be overheating. Tried restting CMOS. Initially was able to boot eventually after 25 or more power up attempts and I reinstall Vista but it didn't help. Now it will not boot at all. Tried a new hard drive, didn't help. My PSU is not overloaded. I have nothing but a keyboard and monitor attached currently. Any ideas? Someone's opinion was that the mobo is fried, but I'd love any expert opinion to verify this... Thank you!

What you want is PSU with high amps on +12V single rail. As you can see the CX400W has 30A which is very good for 400W. It's not the watts that matter, it's the +12V amps. Ignore the watts. There are some even cheaper 430-480W PSU's that only have 17-18A on a single +12V rail. I have an Ultra 800W w/4 +12V 20A rails and on a P45 Platinum, Q6600 and 250GTS it died with blown capacitors but was OK with a 9600GT before the VGA change. I have a Corsair VX450W and a TX650 and expect those to last me for a long time to come, maybe even till I drop dead .

Similar Messages

MSI Z77 GD55 endless boot cycle with 32GB of RAM

Got a Ivy Bridge GD55 with a 3770K and 32GB of G.Skill 1866mhz Sniper RAM - whenever I use more than two sticks at a time, or outside of the 2 and 4 slots my computer refuses to boot up - it powers on, fans whirl for a couple seconds and then the machine resets. All four sticks will boot properly if they're placed in the 2 and 4 slot, but once I add the other two the system refuses to boot up, doesn't even get to POST before restarting itself.

Quote from: xmad
If you need the memory, try a set of corsair dominators.
Quote from: Froggy Gremlin on 03-December-12, 05:49:00
+1, with the addition of Corsair Dominator 'Platinum' as being the best of the best IMHO.
http://www.corsair.com/en/memory-by-product-family/dominator-platinum-ddr3-memory/dominator-platinum-with-corsair-link-connector-1-5v-16-gb-dual-channel-ddr3-memory-kit-cmd16gx3m2a1600c9.html
However ... same speed (1600MHz), same timings (9-9-9-24), same voltage (1.5).
Vengeance 105 bucks, Dominator 180 bucks

Unusual long boot cycle on my MacBook Pro 13' Mac OS 10.6.8

Unusual long boot cycle on my MacBook Pro 13' Mac OS 10.6.8
No new hard or software has been installed.
Is there a way to fix this?

Can you enter the following command in Terminal and post the result here?
Command is "ls -al" (it's the "L" letter in "ls" and "-al"), then press Enter.
Additionally, you can enter the following commands in Terminal (press Enter after each one):
sudo chown root:admin /
sudo kextcache -system-prelinked-kernel
sudo kextcache -system-caches
(Admin password required)

MSI Z68A-GD65 (B3) Continuous Boot Cycle

My Mainboard was running flawlessly, but yesterday when power on the system...I found that Continues boot cycle.
The computer turns on for a few seconds then powers off. This cycle repeats every 5-10 seconds.
Z68A-GD65 (B3)
http://www.msi.com/product/mb/Z68A-GD65--B3-.html
What are possible fixes/problems or I have to RMA it...please help
I have tried clearing CMOS, swapped the psu, cpu, rams...and also tried with one ram stick at first slot near cpu and at at all other memory slots...but no success and same repeated automatic boot cycle every 5-10 seconds or so...
my specs are..
2600k
Kingston 2x2 gb ram 1333mhz 1.5V...value ram
Nvidia GTX280 GPU
Delta branded 750watts psu

Quote
when i reset the cmos..on first second and third boot the BIOS led flashes..but on fourth it remain stable in that brief time it is powered.
Could you clarify this a little? You mean the BIOS LED stays full off, or it is on steady?

Ipod Shuffle in endless Restore Cycle

History:
-I bought a 2nd generation Ipod shuffle a week ago and hooked it to my Windows-based system
-Was prompted to, and downloaded latest version of Itunes
-Started loading music onto Shuffle
-After 100 songs or so, got an "Ipod Corrupted" message and downloads stopped
-When I connect Ipod and get the device recognized, I am prompted to Restore Ipod to original factory settings and download latest version of Shuffle software
-When I hit button to proceed, Itunes goes into an endless Restore cycle which doesn't actually restore the Ipod (the longest I have left it on is 12 hours and no dice)
-The Ipod is functional when disconnected and has the songs I loaded but I want it restored to full functionality
Any advice? Anyone have the same problem? This tiny device is taking up far far too much of my time.
Thanks.

I had the same problem. My iPod shuffle would just continuously blink orange and would not sync up to my iTunes library. Talked with Apple support and here's what worked for me...
Under My Computer right click on your iPod name.
Hit format (I'm pretty sure you'll lose all your music and will have to wait for it to re-sync.)
After that it just started working.
Worth a shot if you've tried everything else.
Windows XP

Ipad 2 gets stuck in a boot cycle

2 weeks ago, i left my ipad 2 to go to bed. when i woke up, the device had turned itself off. it was about 90% charged before i went to bed. upon attempting to turn it back on in the morning, the apple logo screen was reached and then some white text similar to cmd text appeared on the side of the screen. The text said something about NAND driver, memory= 0 and some other things i didnt catch. the device then restarted and got to the same screen again, before continuing to restart and display that screen.
I attempted to restore the ipad via itunes (latest version) in restore mode and DFU mode. Each time i got the error 1611. Reading the error codes, i uninstalled my antivirus and itunes and reinstalled itunes. i then ran itunes in windows 7 compatibility mode as administrator. I still got the error.
I took the device to my friends house who tried to restore it, in restore mode in a usb 2.0 port but got the error 1613 i think. After this we tried restore mode and DFU mode in a 3.0 port. these both failed and gave error 21. looking at this code, we then used DFU mode in the 2.0 port and the device restored and updated from ios 5.3 to 6.1.2.
the device has worked fine for 2 weeks up until today when midway through a game, it turned off and i get stuck in the same boot cycle again.
what could be wrong with it and what can be done? the device is refurbished and within its 1 year warranty.

I just can't think of any other software fixes that might work since you have done everything imaginable and recommended by Apple - at least to the best of my knowledge.
There is one sort of off the wall thing that you can try, but frankly, I don't think that it will make any difference at all. I have read here in the forum to let the iPad battery totally drain until it shuts off, recharge the battery for about a half an hour, and then try restoring again. I don't know if this is an urban legend, or if it really works. I don't see what difference that would make anyway other than you would be restoring the software after letting the battery drain.
You have restored the iOS and downloaded it again using DFU mode and that hasn't worked. My assumption would be that there has to be some hardware issue going on. A faulty connection inside the device, a bad chip.... Something non software related.

N900 Boot Cycle Issue

Hello everyone, my name is samantha and I just bought a new Nokia n900, it seemed a really nice phone with a very large potential, however I ran into a booting issue, the phone itself doesn't randomly reboot while I'm using application, as in other cases that I've been reading, but when I normally shut it down, I give it some time, and try to turn it on again, instead of a normal booting like this:
http://www.youtube.com/watch?v=HorA_H8TKdo
It repeats the cycle some times, for instance the first Nokia screen shows, then the dots, then a black screen, the the first Nokia Screen again, just like If I had just turned it on, and it will repeat a few times, and then eventually it will turn on.
Does anyone knows if this is an issue in the hardware?
Because I already read tutorials and flashed the emmc and the OS to the latest version, and it still doing it with the factory settings, no custom applications, etc.
I just turn it on after a full flash, use it a bit, such as taking pictures, playing chess, and then when I turn it off and try to turn back on, that strande boot cycle happns.

a reflash didn't fix it, so its probably a hardware issue, try raking it to a nokia repair center.
Reality is wrong....dreams are for real... 2pac .
don't forget to hit that green kudos

Endless Boot loop on the new 2011 MacBook Air

Has anyone experienced the Endless Boot loop syndrome on the new 2011 MacBook Air?
Mine is the 13" 4/128 model.
Tried the SMC reset but to no avail!
Am I the first one on earth?
Please help, Apple world!

It's not a hard core gaming rig, but it plays all the FPS games I like, quite well. It handles hi-def video, just fine. I use it for Photoshop, and it is quite fast. For web browsing, it has no equal. The 2010 maxed out 11" would do it all, except for some hi-def video (1080P), which it would stutter. But my new 2011 maxed 13", is perfect for video (1080P=no problem).
I really don't think a MBP will give you as much, on a daily basis. It (the MBP) has only a few advantages, and except for the built in optical drive (which you can still go external, if need be), none of the advantages you will miss even slightly.
I think the MBP would only serve me, if it spent most of the time deskbound, but I would still need an SSD. Once you have had an SSD, you can't go back. Then, you would have a really pricey MBP.

Hp pavilion a6200n boot cycling

im having problems where the computer goes through a strange boot cycle
a friend sent in their a6200n to me to fix because the comp freezes up (its using all the ram available)
i add 2 ram chips to it and the comp now wont get very far past the bios (as soon as i select an option to start the computer normally or otherwise it resets)
i removed one new ram chip after trying multiple patterns with all four chips in the four slots (old,old,new,new; new,old,new,old; and so on) and tried booting the comp that way. i got all the way to the login screen before the blue screen of death showed up
if i was at my old job id try the power, reset the motherboard, and so on just going down our checklist of steps but i no longer have the tools and thus the luxury to do so so can you please tell me what is the most likely to check next?
thanks again for your help
paul lees
[text removed to protect privacy]

Hi eprice809,
Since you are out of warranty and you believe it is a mechanical problem (power button), have a local, reputable PC sales and service shop take a look.
If you are handy you may want to open the case and remove the front bezel after powering off and removing the PC's power plug from the AC power outlet. Please ground yourself prior to touching internal components. Check wiring connections on the power button and the motherboard. The problem could be mechanical or electrical. Be careful, motherboard voltages are lethal!
HP introduced this model in 2007. I doubt if you could find an HP replacement part using HP's Part Store or Partsurfer.
Jaco
****I am not an HP employee****
Please give a" Kudos, Thumbs Up" if advice received is relevant or" Accept as Solution" if your problem has been solved.
HP Products:
810-150se Desktop
17t-j000 Notebook
1380t Desktop
560z Desktop
Errare humanum est.

Macbook- Endless reboot cycle- Failed 10.5.2 attempt!!!!

Hi,
I've got a Macbook. I tried doing the 10.5.2 update and then it froze along the process, so I rebooted. The computer wouldn't get past the white screen spinning wheel Apple screen on startup, so I figured I really screwed things up. So I put in the Leopard disk and did an Archive and Install thinking that I could start anew. After that though, all my machine does is go to the white Apple spinning screen for a while before it restarts, by itself, again and again. It is an endless cycle.
Please can someone help me. Please don't tell me what I should have done(permissions repair etc. I did that) I need some advice for what I should do from here. Thanks!
BTW- I did a PRAM reset and I did a 'verify disk' in Disk Utility off of the installation disk. No problems were reported.

Just an Update in case anyone else has a similar problem..
Went to the Genius bar at the Apple store. They booted my machine using one of their external hard drives and ran the 10.5.2 COMBO Update. That did the trick and I'm back up running again. thanks Apple!!

STOP 0x0000007B after IDE mode on SATA 1.5 HDD / Endless Boot Time

Lenovo IdeaCentre K410
- Windows 7 Home Premium 64-bit
- ST31000524AS 1 TB
Added by me:
- Maxtor 6Y120M0 100 GB (Diamondmax Plus 9 SATA 1.5 Gb/s)
Alternate boot methods attempted:
- (DVD) Lenovo OneKey 7.0 Recovery
- (DVD) Windows 7 Home Premium 64-bit (FPP)
- (DVD) Windows 7 Home Premium 32-bit (FPP)
- (DVD) Ubuntu 14.04 LTS (LiveCD)
- (USB) Windows 10/Technical Preview
- (1 TB HDD) Windows 10/Technical Preview
=== DESIRED RESULT
I want to use OneKey 7.0 (the OEM's "system default" recovery/rescue system) to install its Windows 7 Home Premium 64-bit onto the 6Y120M0. I will then use a USB volume to install Windows 10/Technical Preview on the ST31000524AS.
=== PROBLEM
Whenever the 6Y120M0 (Maxtor Diamondmax Plus 9 1.5 Gb/s) HDD is attached to a SATA controller, any boot method other than (DVD) Ubuntu 14.04 LTS (LiveCD) hangs endlessly at startup.
Thus, the OneKey 7.0, Windows 7 FPP, and Windows 10 boot media would show an animated Windows logo at startup and animate endlessly. The HDD light would remain solid. No further progress was made even when the computer was left alone for 35 minutes.
This issue occurred with or without the ST31000524AS 1 attached. If the 6Y120M0 was disconnected, bootup using any of the alternate methods above proceeded successfully and the HDD light would not be solid, whether or not the ST31000524AS was attached.
An interesting side note is that when the ST31000524AS was originally being used with the OEM-provided Windows 7 Home Premium 64-bit, I was able to attach the 6Y120M0 and it would be detected as an extra volume when booting directly to the ST31000524AS.
=== ACTION TAKEN
Sometimes a solid or hyperactive HDD light can be indicative of HDD failure. Thus, I sought diagnostic tools from the HDD's manufacturer since I couldn't even boot into a Windows recovery environment to run CHKDSK.
Since Maxtor is now under the care of Seagate and my MaxBlast CD from the early new millenium doesn't seem to work anymore, I downloaded SeaTools for DOS onto a CD and attempted to use it. No HDDs were found. It is also interesting to note that
the ST31000524AS could not be found by this software when it was attached.
After searching around on Google, I found a resource that suggested changing a BIOS setting in order to make the HDDs visible to the diagnostic utility. Apparently, this is a setting (which I've never used before) called "SATA Mode."
My BIOS gives me one of three options for this setting: "IDE" (which I recognize as the parallel ribbons I used to install on my HDDs as a teen), "AHCI," and "Disabled." The setting was on "AHCI," and the
resource recommended changing it to "IDE." After doing this, SeaTools detected the HDDs.
A long scan of the 6Y120M0 found no defects. There were no SMART warnings.
However, I noticed something curious after running the diagnostic. With the BIOS still set to "IDE mode," all of the alternate boot methods mentioned above were now working with the 6Y120M0 attached and there was no longer a solid HDD light.
I was able to boot into the OneKey 7.0 environment successfully and install a new image on the 6Y120M0. However, upon attempting to boot into the new installation, I received a STOP 0x0000007B error. Switching back to "AHCI" mode, I
was able to boot into Windows 7 on the 6Y120M0; however, the problem previously experienced of hanging using any other boot method persisted.
I followed instructions elsewhere on these forums to have dump files written to %SystemRoot%\MiniDump, but was not successful - even after making sure that certain services were off, creating the folder on my own, and ensuring the 'Everyone' had full access.
=== INFERENCES MADE
I explored several resources - including this forum - to try to find others with similar issues and further understand the significance of the SATA mode setting. The 6Y120M0's connection points look identical to those used by the ST31000524AS and the
DVD drive, so I am certain it is SATA. The posts I came across were from users who suspected that there was something wrong with AHCI and that it was necessary to use IDE, but I read other comments that stated that AHCI is supposed to work just fine
with SATA devices. Many of the issues remotely similar to my own did not seem to have a definitive solution.
Further research into the specific STOP error in Microsoft's Knowledge Base helped me learn that Windows apparently only installs device drivers necessary for use at the time of installation. Thus, if you're using SATA, it's not going to install IDE
drivers, and switching modes will cause the STOP error as a result.
(source: knowledge base article # 922976)
Unfortunately, almost all of the references I see to this issue on Microsoft's website, Microsoft's communities, and even non-Microsoft websites seem to refer to this problem in the context of switching from IDE mode to SATA. In this case, I am trying
to switch what my OEM probably intended to be SATA to an IDE. This leads me to believe that installing the IDE controller drivers on the Windows 7 installation while in ACHI mode and then going back to IDE mode will resolve this issue, but I have not
been able to find IDE drivers from Microsoft's website.
I wonder if it would be possible to use my Windows 7 Home Premium FPP (full packaged product) to do either a repair or direct driver installation on the 6Y120M0 while running in IDE mode. I am thinking about doing it, but haven't done it yet because
I'm worried that installing drivers from a FPP may alter the licensing of the OEM provided product. I want to fully utilize the OEM-provided operating system (since I paid for it!) without the need to bust out my FPP. Since the licenses and activation
processes are tied to motherboards, the HDD is the only change that is being made, and the OEM's recovery software is fully willing to install to a non-OEM HDD, I see no reason why this can't continue.
(I'm saving the FPP for a special occasion.)
=== DESIRED ASSISTANCE
I'm 26. Back in "my day," we used IDE to connect to our storage, CD-RWs to back things up, Notepad to build our websites, computers that actually made a beep when you turned them on, and master boot records to get them going. (another
thing I just discovered - some acronym that sounds like "Yuffie?" Isn't that a Final Fantasy VII character? whatever it is, I guess it's now replacing BIOS as we know it.)
My dry attempt at humor notwithstanding, I feel that this is a potential learning experience. I need you to explain to me (and anyone else who comes across this search result in Google - OOPS! - I mean Bing) what is /specifically/ happening and why.
Please try to resist the urge to tell me not to use hard drives from 13 years ago.
Now, while I wait for a reply, I think I'll go play a little Age of Empires II. At least that's SOMETHING from a familiar time that still wants to work for me. .. well, as long as you remember to kill the explorer.exe process first, at least.
*snicker*
Thank you very much in advance for any insight you are able to provide. :-)

Hi Shane,
Thanks for your detailed description.
Just as your inference, it caused by incompatible driver for different device.
Let's try this:
locate to the registry below:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci
change its value as "0", and then boot into computer, change SATA mode to AHCI mode.
After that, check the result.
Karen Hu
TechNet Community Support

B&W G3: Endless boot

Hello everyone,
I previously posted a topic called "Dead B&W G3 ? Only the power supply seems to work..."
http://discussions.apple.com/thread.jspa?threadID=2023823
Anyway, I'm now facing a different issue so I'm starting another post.
My setup (as of yesterday):
Powermac G3 B&W Rev.B
Processor: Powerlogix G3 750FX (1Ghz)
Ram: 1GB (4x256Mb)
OS 10.4.6
HD: Seagate SATA 1.5tb (just installed yesterday)
DVD-Rom: Samsung DVD-/+R
PCI 66Mhz -> Radeon 9200
PCI 33MHZ -> EMPTY
PCI 33MHZ -> Sonnet Tango 2.0 (USB/FW)
PCI 33MHZ -> Sonnet Tempo SATA (just installed yesterday).
Also, to answer the previous post, I was able to make the G3 work by replacing, not once, but twice the Motherboard (each time a Revision 2)... It's funny that it took two motherboards to resurrect that machine (both found on Ebay via KP Surplus).
Let's get back to the problem I'm facing... After a super über slow install that took three hours, 10.4.6 has been installed on my Seagate HD. However, unless I boot from the CD (10.4.6), the B&W G3 boots from the HD literally for hours (apple logo / spinning wheel) but nothing happens (I can hear the Hard Drive function but that's about it).
BTW- It was that way before as well with an ATA Western Digital HD booting from the Ultra ATA plug but the drive was defective according to Disk Utility on the Tiger Install Disk so that's why I went for a SATA solution (Sonnet / Seagate).
I'd love to hear from anyone who has dealt with this issue before.
Thanks,
Pierre André.
P.S.: Forgot to mention / Did the CUDA / PRAM actions as well / Maybe another faulty MB ?
Message was edited by: pierreandre90403

Hi Grant !
Thanks for the lead from a week ago.
Okay I changed the processor last night but absolutely no change in behavior (except for a slower system speed), it would not run 0S 9, would not run the firmware update in Classic Mode (10.3.6 -> still the same reply: this is not a G3 machine).
I also tried another Tiger install with the 450 Mhz G3 processor but the same results were the same (gray screen, endless spinning wheel).
After consulting the following documents:
Gray screen appears during startup -> http://support.apple.com/kb/TS2570
I did a safe boot -> http://support.apple.com/kb/HT1564
and was able to isolate the issue to "user.app" (once Tiger in Safe Mode hits this, it hangs booting, the only way to make the system react is by plugging and unplugging the ethernet cable.
Here's what I'm doing right now, I've unplugged the Samsung DVD-Rom, the Zip, the M-Audio 2496, The Sonnet Tango (FW/USB) card.
Are only left a Pioneer DVD-Rom (Apple pull-out from another tower / Apple branded), the Sonnet Tempo card (w/ the Seagate HD attached to it), the Radeon 9200, the 1GB ram (4 bars).
Am trying another Tiger install to the SATA drive... If it doesn't work, I'll get a 120GB HD from OWC and will plug it into the IDE MB socket (this MB did run Tiger before but only via that socket).
If Tiger runs from that socket, then the duo Sonnet SATA card / will only work as a secondary HD (of course, I'll loose speed as the SATA HD smokes any IDE solution but with the overall 100Mhz Bus on the B&W, I don't think the difference will be huge).
Also, has anyone ever run a DVD-ROM drive / Zip Drive from the ATA socket ?
Thanks,
PA.
Message was edited by: pierreandre90403

Re-boot cycle with new opty 175?

Iv already posted in this thread https://forum-en.msi.com/index.php?topic=101539.40 but its been a couple of weeks since anyone has made a post so thought I would repost here, sorry if this is wrong way to do it.
I installed my new Opty 175, It recognised OK in my system. ACPI MultiProcessor PC with both cores reported under CPU in Device manager, Task Manager showing 2 graphs for both cores, all looks good so far.
Installed the MS Hotfix (never done the PerfEnablePackageIdle registry edit, is this maybe a problem?) then the AMD Optimiser, everything still looking good.
Quote
install Dual Core HotFix V4 --> https://forum-en.msi.com/index.php?topic=103843.0
reboot.
install Dual Core Optimizer --> http://www.amd.com/us-en/assets/content_type/utilities/Setup.exe
reboot, re-test. (check it from device manager:
This is the order I installed the fixes, as per BOSSMANS instructions.
I cant see the MS hotfix KB896256 in ADD/REMOVE programs??
AMD fix is there though.
My Problem is the same as mremulator's described in this thread https://forum-en.msi.com/index.php?topic=101922.0
Quote
No No No, the dual core optimiser and MS Hotfix are NOT compatible.
I made the mistake of installing the two and Windows XP would reboot at desktop. AMD have confirmed this.
I have the desktop reboot problem, though not all the time. Seems to be when I've been in the BIOS (no changes made) or recently I ran Memtest for 16 passes (no errors) and rebooted to the reboot cycle again.
I was thinking of just doing a re-install but after reading the above thread it looks like I will have the same problem after installing both dual core fixes?
I have a Ghost Image of my upgrade before the Dual Core fixes where installed and was thinking of going back to this to try again to fix the reboot cycle problem, will this be a good Idea?
Also, any ideas as to whay the MS Hotfix doesnt show in ADD/REMOVE programs? (show updates is ticked)
Can someone please give me a clear route to Installing the fixes (if they are applicable), and if the registry edit for the MS Hotfix is needed???
Any help is much appreciated
g2k.

Right, I've been at this for nearly 4 hours now.
I've done all below and this is MY findings:
1. Restored my Ghost image (which was made prior to installing any fixes, just the CPU installed)
2. Installed the "AMD Athlon™ 64 X2 Dual Core Processor Driver for Windows XP and Windows Server 2003 Version (x86 and x64 exe) 1.3.2.16" software.
3. Installed the MS Hotfix KB896256, then done testing with the reg files supplied by BOSSKILLER, plus the boot.ini edit (with both "/NoExecute=OptIn"
and "/EXECUTE", absolutely no difference with either).
Done a few reboots, messing around in BIOS, just looking - no changes. All fine when booting up. Happy with that I chose the enable reg entry and saved this as my default.
4. Installed AMD Optimiser, reboot straight to windows = OK
reboot to BIOS and mess around looking at the settings (no changes), reboot and when windows loads - instant reboot and back into my reboot cycle!
continued to mess around rebooting and into BIOS and finaly had to F8 to load the "Last good config that worked" on the list.
5. Uninstalled AMD Optimiser, repeated all the rebooting and BIOS messing around, I CANT get the system to get the reboot cycle error at all now
My conclusion is - dont install the AMD Optimiser! Also I agree with mremulator in this thread: https://forum-en.msi.com/index.php?topic=101922.0
Im using only the MS hotfix with the enabled reg key and its fine like that, installing the AMD one made absolutely no difference for me apart from the reboot problem.
I understand people dont have this problem running both fixes, just thought I would post my findings incase anyone else ran into similar problem as me.
@ BOSSKILLER
can you tell me what the difference is between the BOOT.INI edits " "/NoExecute=OptIn" and /EXECUTE" please??
Also, many thnx for all your help
nice one
g2k.

Boot failure, endless boot loop

About a week ago I was using my iMac as usual, gaming, when the colors all went wonky, extremely basic colors, and the comp froze. Upon reboot, when the gray screen came up there were vertical artifact lines running down my screen, and after the Apple came up, the wheel would spin for about 10 seconds, then more artifacts would come up, distort the screen, and the computer would lock up.
I attempted to boot into safe mode, but the artifact stripes were still there, and the comp would still freeze.
I booted into single-user mode and ran fsck -fy, it fixed something once, the next time it ran fine, but upon normal reboot the problem persisted.
I put in my install CD and attempted to boot from the CD, same problem.
I booted into hardware check mode, and the scan came up clean, but the stripes were still there, and every time I moved the mouse, the stripes would flicker. Anytime the screen updated, the flicker occurred.
I reset the pram and the SMC, no luck.
I could boot from target disk mode, and I was able to get my pictures onto my laptop thank God, so the hard disk appears to be intact. Every time the firewire logo moved, the flicker appeared and the stripes were there too.
This morning, while in target disk mode, the iMac suddenly reboot itself, and continues to do so forever. The screen turns on but displays nothing, just chimes and chimes. I reset the SMC once and got the gray screen to come up but no Apple, and it just went right back to rebooting itself.
I'm guessing I'm pretty much hosed at this point, but, what the heck happened? I've searched around a bunch and can't find anything exactly like what's going on with mine, but several similar ones. What are my options at this point?
Thanks a ton.

My 24"IMac (Dec 2007) started to automatically reboot 2 days ago. Didn't matter whether I was running any particular application or browsing the net, it would auto reboot, sometimes make it to the logon screen, sometimes not, just an endless loop of rebooting. I tried the SMC reset and the PRAM reset multiple times. A few times I was able to logon to the desktop but even without touching a thing the system would reboot within a few minutes. It finally got to the point of not being able to boot up at all. I could barely hear the fan running and occasional hard drive sounds as the system kept attempting to boot. Tried multiple different outlets, plugging the power cord directly into the wall. Nothing worked.
Fortunately, I had the 3 yr protection plan so dropped it off with the local Apple store yesterday. Picked it up today. Turns out it was a bad power supply. They replaced it with a new one and so far things seem to be working normally. I hope that was the only problem. I know many other IMac owners have had problems with auto rebooting so thought I would post what the fix was for mine. At least Apple didn't have to wipe my hard drive like I've read others have had to do with a similar problem.

IPad stuck in boot cycle

Hi
My iPad will boot, show the boot text then the apple logo and then gets stuck in the same cycle. I have tried to hold the home button as I connect the cable to it as per the recovery instructions.
Can you help
Thanks.

Hi sspencer18,
Welcome to the Apple Support Communities! I understand that when you turn on your iPad it shows the Apple logo and does not progress past that. I think you are on the right track trying to restore the iPad with iTunes. There are some specific steps to get the iPad into recovery mode though. Make sure the iPad is turned completely off before you hold the home button and connect to iTunes. Please use the following article for reference.
If you can't update or restore your iOS device
http://support.apple.com/kb/ht1808
I hope this helps,
-Joe

Endless boot cycle

Similar Messages

Maybe you are looking for