Presario sr1820nx will not boot, fans work, get one beep every 3 seconds.

Was working on computer for a while. Shut down and after about an hour moved system to different room. Got nothing. Cleaned system, was dirty, shame on me, and replaced power supply with a 550w from a 300w. All fans work now but get nothing on screen and one beep every three seconds. any way to isolate my problem without taking it in. Waranty long gone.

Try reseating the memory sticks.If no joy try booting with only 1 if you have 2, switching them if no luck with first.
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MacBook pro will not boot. I get the gray screen, an apple icon and spinning wheel. Tried to start in safe mode but get the same screen. The only thing different was that I loaded the zedge sync app yesterday. Now getting this problem.

Macbook pro will not boot. I get the gray screen, an apple icon and spinning wheel. I tried to start in safe mode, but get this same screen. The only thing different is that I added the zedge update app to do a sync for adding ringtones to my apple cell phone. How can I get a good boot. I am fairly new to apple computer.

Reset PRAM: http://support.apple.com/kb/PH4405 and then try a normal boot.
Run the Startup Manager to select Startup disk: http://support.apple.com/kb/HT1310
If those did not work your disk may be sick or dying. The top priority at this point is to make a backup copy of your data.
Check the health of the disk. Boot in Recovery Mode (Boot, Command-R). Run Disk Utility. Click on the upper left disk icon. Does the S.M.A.R.T. status say “Verified”? If not the disk/SSD is unhealthy and needs to be replaced. Even if it does not show “Verified” you can still attempt a backup.
Click on the icon indented below, usually called “Macintosh HD” and Verify Disk. If it finishes with a green “OK” message then all is well with the disk. If it shows errors in red then you have found a problem to address once the system is backed up. Do not attempt software repairs until you have secured the data.
If the disk will not show up at all in Disk Utility as your ran the tests above then it may be dead or it may have a bad internal SATA cable. A trip to an Apple store for confirmation would be in order.
If you have an external disk drive you can use as a backup drive then do so. If not Google “Hitachi USB 3.0 external hard drive 1TB” to purchase one or go to a brick-and-mortar store (including an Apple store) to pickup one. Any 1 TB external drive will do.
Assuming it is still breathing you can try to recover the data without booting from the sick disk.
Reformat the external disk. (This will erase all data on the external disk.)
Boot in Recovery Mode. Start Disk Utility. Plug in the new disk. Select it’s disk Icon (the second one down, left justified). Select the Partition tab.
Partition Layout > Single Partition
Name: Emergency Recovery 1 (or whatever name you wish to use)
Format: Mac OS Extended (journaled)
Options… > GUID Partition Table > OK
Apply
Select the Restore tab.
Drag the old system volume (Macintosh HD) to Source.
Drag the new disk volume (Emergency Recovery 1) to Destination.
Click on Restore.
It may take a long time for the backup.
If that will not complete post back for other emergency data recovery methods, including those from a brody.
If the backup succeeds, use the First Aid tab in Disk Utility to select the old volume (Macintosh HD) and Repair Disk. If it does not finish with a green OK message try to repair it once or twice more. If it repairs with a green OK message, will it boot normally? If not, boot from the Recovery Partition and reinstall OS X.
If it is still not healthy, post back for further instructions.

HT1752 my powerbook g4 will not boot up. i get a blue screen. i have tried to start up in safe mode, but get the same blue screen.

My Powerbook G4 (with Snow Leopard operating system) will not boot up, I get a blue screen. I have tried to start up in safe mode by holding down shift key after startup tone, but end up with same result...blue screen. I need important photos and documents of this laptop, Even if I can just get it started up one more time. Need help fast! If you know what to do, please message back.

In the text you say you are using Snow Leopard. Snow Leopard will not operate on a G4 (or any Mac with a PowerPC processor). Leopard OS 10.5 is the max OS for PowerPC processor Macs. Your profile shows OS 10.5.6. What OS are you using (or trying to use)?
Will the PB boot using a systen install DVD?
 Cheers, Tom

My macbook pro will not boot. It gets the grey screen with the apple until the bar is half way across and then shuts down. The only screen I can get to is in safe mode and I don't know what to do with that

my macbook pro will not boot. It gets the grey screen with the apple until the bar is half way across and then shuts down. The only screen I can get to is in safe mode and I don't know what to do with that

Mac OS X: Gray screen appears during startup - Apple Support

PowerMac G5 2.3Ghz will not boot, fan gets laud

Power Mac G5 will not boot. when i push the power button i have the normal chime and the screen comes up with mac os x starting and it freezes or goes to black and then the fan noise becomes Lauder and Lauder. at this point i don't have keyboard or mouse control. any idea? i already reset the PRAM and SMU and not helping at all.

Hi! Run the hardware test that came with your computer to see if it boots. You could have a dead hard drive. You might also try booting from the OSX install disc with the hard drive unhooked. This would give you an idea if the hardware is ok. Tom

Hello, mac mini will not boot. I get a file symbol with a question mark, then a white screen, Hello, mac mini will not boot. I get a file symbol with a question mark, then a white screen

Hello, My mac mini will not boot. When I turn it on, I get the chime, then the white screen, then the apple symbol, then a file symbol with a question mark, then the white screen and then it stays like that.
Is this a bad hard drive?

Sounds like it. Try booting from your OSX restore DVDs - startup and hold down "C". This will take AGES! Then run Disk Utility from the menu.
The flashing ? means your system is corrupt, dead, not there, on a dying HD, etc...

PM G5 will not boot, Fan's run on full

I have a relatively new PowerMac G5, DP 2.0GHz (early 2005), and for the most part it has been excellent... a few days ago, i walked into my room to hear my computer running with all it's fans on full. since it would not respond to either keyboard or mouse to wake it, i powered it down (held power button) and restarted it.
When i restarted, my computer will get as far as the start-up chime, then the indicator LED will flash between bright and dull 3 times over the period of about 1.5 seconds, then stay solid for about 4 seconds, before flashing again. What is more, after about 30 seconds of this, the fans once again kick up to full speed, and will not slow down.
I can find no obvious reference to this anywhere in the manuals i have with me, nor on this site. I have checked the obvious (made sure everything internally and externally is securely in place) as well as removing and re-inserting the RAM etc. I can not get it to boot from a CD to run a hardware test.
has anyone else experianced anything like this? does anyone know what would be causing this, and if it is easily fixable? will i need to take it in to be looked at?

Luke
In the troubleshhoting section of the PowerMac manual they refer to the diagnostic status of the power LED, and descibe the various conditions. Also, If you run the system with the side door taken off but leave the plastic air deflector in place, you can view the status of the logic board's diagnostic LED's. Their status is also explained in the user's guide.
Power Mac G5 (Early 2005) User's Guide (Manual)
http://manuals.info.apple.com/en/PowerMacG5_(Early2005)UserGuide.pdf
[file is 10.5Mb]
With in the given problem that relates to your situation you can then call Applecare or try whatever steps are suggested in the user's guide.
Hope this helps
LG

Compaq Presario CQ57 - Will not boot after ram install

I was upgrading the ram on my father's old compaq, and was going along fine. I got the ram in, closed it all up, and went to boot it.
I was greeted with a black screen, a blinking caps lock light, a blinking power button light and the orange wifi light. I've made sure it has no static multiple times, and have tried slowly reintroducing power sources. I have cleaned the ram and the input, swapped out ram cards, everything anf nothing seems to work. When I turn it on I hear the CPU fan, and a single beep, then silence after a few more seconds.
Anyone wanna help me with this? I'm a mac lass now a days, so this is a bit out of my memory.

Hello @Remyyy ,
Welcome to the HP Forums! I hope you enjoy your experience!
I understand your computer will not start properly, since changing the RAM. I will do my best to assist you with this issue! To troubleshoot, please try the steps in this HP document: Computer Does not Start
This document contains steps such as resetting the notebook and more, corresponding to the exact symptoms. I believe this document will resolve the issue. If not, I would contact HP phone support for hardware assistance. You can utilize this website to learn how to contact HP appropriately, based on your region: Contact HP Worldwide
Please let me know if you have any other questions or concerns. Thanks for bringing this issue to the HP Forums. Have a great day!
Mario
I worked on behalf of HP.

Presario 1610nx- Will not boot up -even with provided HP recovery Disk or system restore

Dead in the water- the computer had a system recovery disk - all the exe and bat files on the disk do not lead to any restore ractivity- but by doing either the f8 or f10 we WERE ABLE to get to a system retore screen - no date options so assumed this was to original set up however, when it started it ran slow and after a few hours stopped with an error messsage with less than 30% restore completed. The message states something like this assume not found Multi(0) Disk(0) rDisk(0) Partision2\windows\system32\KDcom.DLL then repeats all but the last which changes to other files NTOSKRNL.EXE HAL.DLL ETC
My mother in law whose computer it is never did any recovery disks and assumed the one supplied by HP was all she would need if it came to that-- Am I missing a restore disk command- the bat files will run but alas no restore and best success is getting to a prompt with no next steps.
So have tried looking for info here but nothing has come up like this. Does any one have suggestions?

Hi
Please find the link given below might help you to fix your issue.
Resolve Boot Device not Found Error Message
Let us know how it goes!
"I work for HP."
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Manjunath

K8t neo far-2 does not boot. fans work.

Hi all,
I have been reading the post about this motherboard not posting and simular problems with these boards but mabey mine is a little different. Here is what I have:
- Thermaltake Tsunami dream
- Antec True 550 eps12 volt
- Amd Opteron 244 cpu in slot one.
- Kingston ram KVR333X72Rc2/512 registered ram.
- Gigabit gforce fx5900xt vidio card
When I finally got the vidio card installed it and powered up the pc. Did not post or no audio beeps from the speaker. Tried switchin ram slots with this single stick of ram and tried a pci vidio card cannot get vidio/audio post or beeps.
I have taken out all the drives to minimize this system to its bare essentials to isolate the problem.
All I get is the cpu,case and power supply fans that come on and thats it.
I read in the post that the not hooking up the 4 pin molex from the eps12 volt to the Jpwr2 is not to be done as this actuall supplies power to the vidio card? Doing so would fry the motherboard? If so then why does my vidio card have the traditional molex connector on it as seen on hard drives? it does not match the one on the motherboard. 2. If that square white semi clear four pin connector from the eps ps does not go into that jpwr2 jack on the motherboard then what does it go to???
Are there bios test LEDS on this motherboard? I dont see any.
Lastly I hear a faint click every 10 second on the pc speaker but no bios codes.
You help is much appriciated to rectify this problem.
James

In dont want to except this as a blown board. I dont have any warentee on this mothetboard as it was purchaced though a second party.
If by chance placing the 4 pin molex power cable comming from this power supply into the four pin connector on the motherboard "IEEE is going to hear about this" and it did fry the mothboard would it also fry the cpu and ram? I HOPE NOT what have you heard from other people?
Bas, read compatibility list about ram and the kingston ram I should be using.
While this list did not include my ram it should work right?
My ram may be a little faster but it is ECC. The ram I ordered was specificially ECC kingston ram from compucare and it should work. The ram model number is
KVR333X72RC25/512
Also, the power supply is a Antec True 550 EPS12V
The power supply specs are as follows:
DC output +5V +12V +3.3V -5V -12V +5V SB
MAX. 40A 36A 32A .5A 1.0A 2.0A
Min. 0A 0.8A 0A 0A 0A 0A
Now Even with the cpu and memory taken out there should be some post beeps on the speaker? I dont think I have done this yet.
Lorin

PowerPC G5 will not boot (from CD, single-user, verbose...) - is it dead?

I had posted this in the OSX forum but had a suggestion to post here as well - any suggestions would be greatly appreciated!
My PowerPC G5 (10.4.11) will not boot. It gets to the grey Apple screen, and then freezes there, no progress dial, and the fan starts racing after a couple of minutes sitting there. Here is what I have tried so far and the results:
-Will not boot normally - freezes at grey screen
-Will not boot from CD (DiskWarrior, 10.4 Install disc OR 10.3 Install disc - which came with the G5, each time it freezes at grey screen
-Will not boot in safe mode - freezes at grey screen
-Will not get into single-user mode, freezes at "DART-enabled"
-Will not get into verbose mode, freezes at "DART-enabled"
-Holding option when starting up allows me to select a drive (hard drive or CD), but then freezes at grey screen when attempting to boot from either drive
-Option-Command-Shift-Delete does nothing when starting up, again freezes at grey screen
-Option-Command-P-R does not work - well, maybe it deletes PRAM, but it never even gets to the grey screen, freezes with a blank (black) screen, so that can't be right
-I CAN get into open firmware & eject cd, cannot boot up from there - it freezes at the grey screen with a circle w/a line through it
-Attempted to reset NVRAM from Open Firmware, "reset-nvram" and "set-defaults" both were ok, then it froze after "reset-all"
I have tried everything I could think of and everything I can find - Does anyone have any possible suggestions or ideas for what I can do?
I had a couple suggestions that it could be RAM, so I'm going to try to run Apple Hardware Test, though if I can't boot from a CD, that will make that very difficult. Any thoughts?

Hi svman8-
Did you also reset the SMU?
One thing known to cure various ills is to replace the battery.
This may be a helpful link:
How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005)
Luck-
-DP

Power Mac G4 MDD Will not Boot

I have a dual 1.25. I had the screen come up and tell me you have to restart.
restarted computer and now it will not boot. I get a black screen, cannot boot from CD, CD lights up then turns off. All fans turn on, the start up chime, chimes. Mouse does not seem to work, no lights and neither does keyboard. reset pmu by pressing button on mother board. removed PRAM battery and replace after 30 seconds. There is a red led lit on mother board, close to the RAM. I have replaced video card, not fixed. I have reseated every board I can, including ram. I am at a total loss. i hold down option, nothing happens. Help..
I have a WD 1.5 TB with full operating system on it, plugged in via fire wire, and i cannot boot from that. I was downloading from an FTP when the force reboot happened.

Will try that next, have appointment at genius bar, just thought i would bounce it off some people here. I did disconnect all peripherals, and unplugged battery for 5 minutes. I did not replace PRAM battery, but would the mouse and keyboard not work because of PRAM>? Anyways, still trying. Thanks for the input, much appreciated.

IMac will not boot

Hello everyone,
I feel as though I'm fighting a lost battle, but just in case, I wanted to know if anyone could help before I throw in the towel.
So my iMac (early 2010, I believe), will not boot.
It gets stuck at the loading screen with the apple logo. The loading globe/icon is there but it just keeps going, and nothing changes. Another loading bar, which I assume is the one that appears when you try to boot in safe mode, shows up for a few seconds and disappears without any progression on the bar.
I've tried booting in safe mode, it doesn't work. The loading bar appears and disappears, that's it.
I've tried booting in recover mode AND internet recovery mode, doesn't work. While attempting to boot in recover mode, the apple logo and loading globe eventually disappear but then the screen is just white and blank, nothing else happens. With internet recover mode, the screen goes black, and immediately turns back on white and blank, but nothing else happens.
I've tried booting using single user mode, doing the fsck command. Tells me "keys are out of order", "HD could not be repaired", "file system was modified".
I've tried resetting the NVRAM with opt + cmd + P + R
I've tried resetting the PRAM, turning off my computer, unplugging everything, waiting 30 seconds, plugging everything back in, waiting 10 seconds, and turning it back on. And when I saw unplug/plugging everything, I just mean the power cord. My mouse and keyboard are wireless, and have not had anything else plugged in.
I do not have a boot disk, bc my os came digital, and I did not make a bootable copy.
I do not have another mac computer to try the target disk mode.
I do not want to go to apple so they can just scrap my HD, and everything that is on it.
I just need to boot it once so I can at least try to back everything up.
So what can I do?
Please, someone save me...

I know there aren't a lot of answers for this but, I don't know, maybe someone knows that target disk mode will have a good chance of working. Or is it possible to create a bootable disk, and that'll probably work? Or maybe one of you knows some magical trick to get my booting unstuck.
I just need my computer to boot once, ONCE, so I can back everything up and reformat, bc I know my HD is the problem, I know it's messed up. I just need a way to get it to boot once.

Imac intel circa 2005 will not boot

I was woundering if anybody might point me in the direction of resolution to this problem. My intel circa 2005 iMac will not boot - OS Tiger - get a blue screen. Funny thing is that when I reinstall OS the computer works alright for a day or two then crashes when I open a programme such as iPhoto. I then reboot and get the blue screen of death again. I have done this several times. The reinstall works again only for a day or two then back to square one. I have clean installed reformated the hard drive etc all the resets etc. I have also run the hardware test extended and this said all was ok. Ran disk utility and seemed to write 'zero' alright on the whole disk. My gut feeling is the hard drive is on the way out but the ability to write zeros to the whole disk has stopped me from replacing this. Has anybody experienced this before and found a fix without buying a new iMac?

Hello, have you blown the dust out lately? Let it cool for an hour & see if you can get these...
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/

POSIX Error / Will Not Boot

I have a Seagate Momentus XT 500GB HD in my Macbook Pro, and it will not boot. It gets to the loading screen with the apple and the spinning circle, but it just hangs there.
I tried booting from the Snow Leopard installation disk and formatting with Disk Utility, but it gives me that infamously mysterious "POSIX: Cannot allocate memory." error.
I tried taking the hard drive out and connecting it with a SATA to USB adapter, and Disk Utility could easily format and re-install OS X SL on it, and the computer would boot from it as an external hard drive. I tried installing the HD back into the laptop and it wouldn't boot again, which lead me to believe that it was an issue with my laptop, not the hard drive.
I then took it out and connected it to a Windows computer with the SATA to USB, and it worked like normal; I could browse the filesystem (I had the BootCamp HFS+ drivers installed).
I just took my old external hard drive out and took it apart. I put that hard drive into my laptop and am booting it from the SL install disk and was going to try to format that. For some reason, that hard drive just doesn't show up in Disk Utility, so I'm assuming that that hard drive is just broken by itself, although it worked with the SATA to USB adapter. But that's a completely different issue that I don't really care about anyway right now.
I just want my normal hard drive to work. The laptop is out of warranty, and I don't really want to buy a $250 or howevermuch Apple Care warranty just to get this one thing fixed, because this is obviously Apple's issue (I come to this conclusion from reading many other threads that contain less detail, but end up with the same issue as me).
I did try resetting the NVRAM and booting into single user mode and typing "fsck -fy" or something along those lines... I don't feel like looking up the place I found it. But yeah, I've tried those both.
Any suggestions? Thanks a ton; I need this computer for school...
Message was edited by: Ben Alt.

Lol yes, it is my issue in that sense. What I meant though is that it's an issue caused by a defect that Apple should solve. I say this because I've seen other people with the same problem. But yes, it is my own issue that I need to solve.
I thought of the ribbon cable, too. To be honest, I'm not really comfortable bringing it into the Apple Store. Do you think it'd be a good bet to just try the ribbon cable first, and then if that doesn't work to bring it into the store?
I found the cable on iFixit for $39.95. Do you think that's a reasonable price?
Thanks for the quick reply!

Presario sr1820nx will not boot, fans work, get one beep every 3 seconds.

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