HT1750 start up question mark

Why does the mac flash a question mark periodically

Welcome to Apple Support Communities
Your Mac can't find any bootable disk.
1. Insert the Mac OS X DVD and press C key while your computer is starting.
2. Go to Utilities > Disk Utility, select Macintosh HD in the sidebar and repair the disk.
If it doesn't help, the hard disk is broken. Take the Mac to an Apple Store

Similar Messages

Bootcamp start flashing question mark

Hello!
When I want to start my MBP 15-inch, Mid 2010 with bootcamp partition /start machine ALT, chose bootcamp partition/ I see only a folder with flashing question mark. It happened after when I change system 10.9. It was a clean installation /with usb, erase the Mac OS X/
I make ALT + CMD +P + R when start the machine, but nothing change.
I check DU smatr the hdd is verified.
I try to reinstall the windows7, but after installation when restart the machine, same folder with flashing question mark.
My OS X is working fine, if I put DVD, or USB I can start. Only the bootcamp not working.
I go to bootcamp and it shows me: "The startup disk cannot be partitioned or restored to a single partition." I can chose only "OK" , and after "Go Back"
On my machine I have 3 partition: -1 OS X -2 data -3 Bootcamp
Before I install the new system it was ok!
My old system was 10.6.3, a month ago I upgrede at 10.6.8. On the bootcamp partition it was windows 8.0.
The partitions was same like now, I not changed.
How can I install again the windows?

Just replace the hard drive.
If he lost data, look at data recovery services*:
http://www.macmaps.com/backup.html
And in the future always recommend people backup important data frequently.
If he still gives you death threats, call the police.
- * Links to my pages may give me compensation.

When I push start a question mark comes on flashing how can I fix it

Please help me fix my Mac Pro

Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by:
Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
Boot drive's directory has been corrupted - Repair with Disk Utility.
Critical system files are damaged or deleted - Reinstall OS X.
The disk drive is physically non-functional - Replace the hard drive.
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD:
Boot From The Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Reinstall Snow Leopard Without Erasing The drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Macbook pro wont start flashing question mark.

I sold a macbook pro i owned since new and it arrived with the buyer yesterday now im getting death threats!
I freshly installed 10.5 leopard on my mbp and used it for 4 hours without issue.
I did have a problem after installing ms office and deleted it and all preference files in same folder and worked ok after that. rebooted 3 times no problem.
The buyer is freaking out saying its trashed and wont boot just has a flashing question mark, why would this be happening???
Please help he's threatening me!

Just replace the hard drive.
If he lost data, look at data recovery services*:
http://www.macmaps.com/backup.html
And in the future always recommend people backup important data frequently.
If he still gives you death threats, call the police.
- * Links to my pages may give me compensation.

Why my imac start with question mark sign on gray screen

need help with imac start up

Click here and follow the instructions. If the computer was running Mac OS X 10.6.8 or earlier and you reach the third set of steps, insert a Mac OS X install disk.
(111966)

My macbook is getting the question mark folder and also my start up disks are gone

A few weeks back I turned on my macbook and discovered that it cannot boot up anymore. There was absolutely no precedent to this. I didn't drop it (I've dropped it many times in the past if that matters, and may have placed it down on my desk a little to aggressively the night before), and I had no problem using my computer right before going to bed. I just closed it went to sleep and the next morning my computer was malfunctioning. Whenever I turn it on the computer is stuck at a grey screen with a blinking picture of a folder with a question mark on it. I thought my computer was a lost cause and I bought a new one, but now I am in desperate need of recovering my lost files on my old computer which I still have.
So I go to the internet for help, with my goal being to just fix my old macbook or at least salvage the data, and read that the thing to do is press command+R when the computer boots up and fire up internet recovery, then go to disk utility and fix the drive/disc/whatever from there. So I press command+R at start up, and I get past the loading screen with the globe and go to a menu giving me the options of disk utility, time machine, reinstallation, and looking on mac forums for help. I click on disk utility and my mac os x disc does not appear to be on the left hand side. There is one disk under a disk that says Disk1 that says MAC OS X BASE SYSTEM or something to that effect on it, but if you click on its info it says that that particular disc has a total capacity of only 1.39 GB, so that can't be it, right? Also when I click on it it doesn't give me the option to verify or repair it. There's another disk at the very top of the left hand side that says 4.14 GB ST_M13FQ8L M... but it also has a low total capacity.
After I find no help in disk utility I decide to take a different route and see if I have any time machine back ups and it asks me to select the disk that contains the backup I want to restore, but the list that is shown is empty. I don't remember ever setting up a time machine back up so this doesn't surprise me.
So I move on to another solution- to try and reinstall MAC OS X Lion and it takes me to a window where it asks me to select the disc where I want to install MAC OS X Lion, but the the little white box under the message that is supposed to show a list or something of the available selections/discs is completely empty. So I have no start up discs?
Then I click shut down on the upper left hand corner of the screen to turn of my computer and another window appears asking me to select the system i want to use to start up my computer but that box is also completely empty.
I don't know what to do this at this point, and I don't know how to interpret the situation either, even after researching the issue on the internet. Does this mean that my harddrive/disc or whatever is completely gone/broken? And more importantly does this mean that all of my data is gone forever? Or is the system or computer itself broken or something like that, but my hard drive is intact? Now that I have a new computer all I really need is to somehow transfer the data from my broken computer to my new one, and don't really need to "fix" my computer- but if fixing it is the only means to see my data again that's what I want to do. And also can I fix this manually by myself, or does this require professionals. And if i do need to hire someone, how much will this typically cost? Thanks!
Some other facts: The macbook in question (the broken one) is an aluminum 13 inch macbook pro from I think 2012, maybe 2011, and used to run on Mavericks. I also used to have windows bootcamp on it but i rarely used it. The macbook has been having some problems for a while and recently started to slowly break down. The USB ports stopped working completely, all of its apps were slow and glitched a lot, the battery in it was nearly dead (it said REPLACE SOON where the battery symbol used to be on the upper right hand corner of the screen), but it still worked at a base level and I used it for work and stuff, up until this point of course.

This document should give you some leads as to what to do.
A flashing question mark appears when you start your Mac

I need to reinstall my operating system for 10.5 after seeing a file folder and question mark flashing on my start up screen. Can anyone help me with this?

I need to reinstall my operating system for 10.5 after seeing a file folder and question mark flashing on my start up screen. Can anyone help me with this?

Hello,
That means it can find the Hard Drive, or can't find the things needed for booting.
See if DU even sees it.
"Try Disk Utility
1. Insert the Mac OS X Install disc, then restart the computer while holding the C key.
2. When your computer finishes starting up from the disc, choose Disk Utility from the Installer menu at top of the screen. (In Mac OS X 10.4 or later, you must select your language first.)
*Important: Do not click Continue in the first screen of the Installer. If you do, you must restart from the disc again to access Disk Utility.*
3. Click the First Aid tab.
4. Select your Mac OS X volume.
5. Click Repair Disk, (not Repair Permissions). Disk Utility checks and repairs the disk."
http://docs.info.apple.com/article.html?artnum=106214
Then try a Safe Boot, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, reboot when it completes.
(Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive.)

HELP I'm getting a blinking folder with a question mark at start up? Have been trying to fix this for 3 hours and I dont want to lose all my files by resetting it completely!!

I currently have Mavericks but my original OS X disk that I have I'm pretty sure is Mac OS X 10.6.6. I'm not great with computers but am usually able to fix problems I have had with mine in the past. I have reinstalled and reset my computer to factory settings before, but I am locked out of my computer completely & can't get to my files to save them & I really dont want to lose them. I was in Safari earlier opening a file, the page started to not respond & froze up my whole desktop so I did a hard shutdown & restarted my computer. I haven't been able to get back into my account ever since. If my only choice is to lose my files & reinstall everything, I need detailed instructions because I actually attempted to do this at first, out of desperation to fix my computer & the installer was asking me to select what disk I wanted to reinstall lion to yet I dont have a disk for that nor do I know what it exactly is asking of me? Please help

Question (?) Mark, Blinking Folder, or Gray Screen at Startup
These are related but not identical issues. Their causes are outlined in Intel-based Mac- Startup sequence and error codes, symbols. Solutions may be found in:
A flashing question mark or globe appears when you start your Mac
Mac OS X- Gray screen appears during startup
In most cases the problems may be caused by one or more of these:
a. Problem with the computer's PRAM - See Resetting your Mac's PRAM and NVRAM.
b. Boot drive's directory has been corrupted - Repair with Disk Utility.
c. Critical system files are damaged or deleted - Reinstall OS X.
d. The disk drive is physically non-functional - Replace the hard drive.
Note that the information I have provided is what Apple recommends, If other users suggest different solutions than found here, then be sure what they recommend does not impact on your warranty, if any, or ability to get continuing Apple service.
Please don't start removing drives or changing cables unless you know what you are doing and have exhausted other non-invasive alternatives outlined here. If you perform any work yourself that is unapproved by Apple, then you will void any warranty you may have and lose all further Apple Support.
Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
The main difference if you are using Lion or Mountain Lion is that you must first boot from the Recovery HD. Simply boot from the Recovery HD to perform the above.
Reinstall Snow Leopard Without Erasing The drive
1. Repair the Hard Drive and Permissions
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
2. Reinstall Snow Leopard
If the drive is OK then quit DU and return to the installer. Proceed with reinstalling OS X. Note that the Snow Leopard installer will not erase your drive or disturb your files. After installing a fresh copy of OS X the installer will move your Home folder, third-party applications, support items, and network preferences into the newly installed system.
Download and install Mac OS X 10.6.8 Update Combo v1.1.
Reinstalling Lion/Mountain Lion Without Erasing The Drive
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

My mac book pro does not start but has error message with a question mark on screen. took it in and was told probably the hard drive as could not reconize it so bought new one but still not connecting.what do i do

My mac book pro does not connect but shows an error message with a question mark on the screen.I took it to a retailer that said it was not reconizing the hard drive.He said i needed a new hard drive but it may be something else as well but he was sure a new hard drive would fix it.So putting faith in someone who deals with them i purchased a new hard drive to find it was still not working although he said the computer did know reconize the hard drive and i may have to send it away to get it checked .After already paying 120 pounds for a new hard drive and they wanting another 80.00 pounds to diagnose it i am a little sceptical.
That's why i am interested on anyone's help.

Welcome to the Apple Support Communities
I think that your Mac detects your hard disk, but the problem is that your new hard disk doesn't contain any operating system, so your Mac doesn't find any bootable partition and you see a question mark.
If your Mac came with DVDs, insert the Mac OS X Install DVD and hold the C key while your Mac is starting. Then, just install Mac OS X. If the hard disk isn't prepared to install Mac OS X, you will have to erase it using "Mac OS Extended (Journaled)". See > http://pondini.org/OSX/DU1.html

Flashing Question Mark Folder on Start-up

I recently starting having administration issues with my Mac Mini.
I went to update to OS 10.5.7 and when the administrator box came up asking for my password, my name was missing. After putting in the correct information, was unable to update, but received the message what my clue to password was.
Anyway, I performed a safe startup, changed the password and tried again. Same issue as before. So I started up from the Start Up Disk, and ran Disk Utilities and verified the disk and repaired any permission issues. When I started up my Mac Mini from the hard drive, I still did not have my administrator password working.
At this point, the start-up ping is gone.
I reset the Pram and had the same issue. So, I saved all important files to an external hard drive and tried to do a clean install. I was unable to do the clean install.
I removed the hard drive from my Mac Mini and installed it into a friends Mac Mini. I had complete control of my computer with no administrator password issues, the ping was there, and I could reload all saved items and still not have any issue no matter how I started up the computer. I then performed a complete erase and reinstall and still had no problems.
I reinstalled the hard drive into my Mac Mini, and I now have the Flashing Question Mark Folder with gray screen on start-up and no ping. Can't fire wire to start up, can't clone, can't start-up from disk, safe mode, etc..
Any ideas would be helpful. Most likely I will be going to the Apple Store and seeing what they can do.

generally, the flashing folder mark means it can not find the startup drive.
if you hear those kind of noises your hard drive is most likely dead. while this is almost certainly true you can try booting from the install DVD and see if the drive is visible in disk utility. if you can't insert the DVD try this. reboot and hold option at the chime. this should boot you into startup drive manager. there you should be able to insert the DVd and choose it as the startup drive. boot from the DVd and once past the language screen start disk utility from the Utilities menu at the top. see if it detects the internal drive. if it does, try repairing it. if it doesn't the drive is dead.

Flashing question mark on start up after crash

Hi all
i was using my Mac mini 2012 with Yosemite installed. I was streaming using air play to my speakers and I went to open Safari and it was stuck on a beach all. I left it for a minute then the Mac crashed and restarted. Upon restarting, I was greeted by a flashing folder with a question mark. I then did a hard reset and managed to boot back into the Mac no problem.
I installed a crucial 512gb SSD a month ago and not had any problems before. Disk utility shows the drive is verified and I done a verify disk check and everything came back fine.
anyone know what could of potentislly caused this? My first concern was the starting signs of a ssd failure but it seems to be working ok again

It could be a symptom of a SSD problem, because the question mark shows up when your Mac does not find any bootable volume (it does not find your SSD drive).
As this might happen again, I recommend you to make a backup of your files onto an external drive with Time Machine -> Mac Basics: Time Machine backs up your Mac - Apple Support By doing this, you will have your data safe in case that problem shows up again. If it carries on happening, I would recommend you to replace the SSD.

G4 displays flashing question mark and blue face at start-up

like the title says, my powerbook refuses to go to the desktop and instead gives me a dark screen and in the center you can just make out a folder icon and on the folder icon flashes a question mark and then that picasso-esque blue smiley face. these two images flash sequentially, one after another.
this started happening about three days ago. the day it started, i got up, checked my email, and then shut the computer down. but then i saw the soft light flashing on the closed laptop that tells me that it is still on. so i figured that i hadn't completed the shut down process all the way. i opened the laptop and almost knocked it off the perch it was on. i grabbed it in time to prevent it from falling, but in the process i mashed some buttons with my thumb. when i turned on the computer, it briefly flashed the desktop and then went dark and started flashing the icons as i described above.
i am in japan right now, so getting ahold of apple in the states is somewhat difficult. any amount of help is very much appreciated. i've already tried a full shutdown by taking the battery out and holding down the power button for 5 seconds, as described on the apple website. this didn't work. i'm not sure which version of OS i have, but i'm pretty sure it is at least 10.0. i got the computer last year right as tiger was coming out.

also, the power icon on the power button is not showing any light, and it wasn't showing any light for a day or so before this event happened.

Flashing Question Mark At Start Up/ Disk Utility Not Working

I am having the old flashing question mark in a file show up when I try to start my computer. I went through a lot of the forums and I have attempted the Disk Utility. When I put the 10.3 install disk in and restart it takes me to the opening screen. If go to disk utility and start it and I have three options: 734.6 MB Pioneer DVD, Session 1, and Mac OSX Install Disk all with a CD icon by them. Not sure which one to pick. Even when I select any though, it does not give me the option to push the repair disk button. It is never available. Anyone know what to do here?

Exactly this happened to me two weeks ago. Unfortunately in my case it was a result of hard disk failure - my heads had burnt out and I had total data loss (I was fortunately backed up recently).
I would suggest taking your mac to a reputable computer firm, preferably Apple who can diagnose hard disk failure immediately. If that is the case you will need a replacement HD, which might be a good opportunity to expand HD size on your system (prices are always coming down; I took the opportunity to go from 60 to 120GB, for £140).
If you are not backed up and ABSOLUTELY NEED YOUR DATA then do NOT give your machine to Apple there and then however; despite assurances, you may never see your HD again, and at any rate once it has been removed it should be handled extremely carefully to prevent platter damage and compromising future data retrieval. It may not be treated with proper respect whilst a replacement is being fitted. Therefore take it to a data retrieval specialist first, who may also replace the HD for you anyway, at similar or lower cost. The cost of data retrieval is very variable but is generally about £500 if an 'invasive procedure' (HD repair) is necessary.
I hope this isn't your situation, but as I say these were exactly the symptoms of my HD failure 2 weeks ago.
Fulvio

Flashing Question mark Folder and clicking - no start up.

Dear Mac Users,
I've already got some info on the above, but my 3.5year old G5 iMac wont get past the flashing question mark folder icon. It can't find the start-up drive. The think the hard drive is dead - if I start up from external HD it's OK and/or Tiger CD - but the mac's HD is nowhere to be seen on any disk utility.
Just bought Disk Warrior - that wont see the iMac HDrive either - so unless anyone has got a fix, it looks like the thing will be dumped or I get a new HD. Are these easy to buy and fit? It's a Rev A model, (the buzzy first edition). I haven't got all my files backed up, just the key ones, which are now on a new alum iMac. Or I could run it off an external drive (noisy, though).
I had been moving the G5 around a lot (switched off) before it went belly up - could this be a cause?
Maybe it'd been feeling left out, with the new 24in installed.
Hope someone can shed further light.
Rob
(PS - anyone want buy my Disk Warrior?)

Your drive is dead, you can look in [macsales.com] or [smalldog.com] for a new new one. The drive isn't too difficult to replace, you can do it yourself, and do get the largest one you can afford, just make sure it's a 3.5" SATA.
Keep your DiskWarrior, you never know when it'll come in handy.

Have a flashing folder with a question mark on start-up but cannot hold option as wireless keyboard won't connect, how do I get it to connect if I cannot turn on the machine?

Hello all, I've registered here because I can't work out how to get my keyboard and mouse to connect.
The issue is that when I turn my mid-2010 iMac on it doesn't load up, but instead shows a flashing folder with a question mark. I've Googled this and have some idea how to fix it, the first step in all guides to fixing the problem states that you should hold the option key upon start-up. The problem I'm having is that I've just had to change the batteries on my keyboard and mouse and they are now not connecting. I can't see how to get the keyboard and mouse connected with the Mac stuck on the flashing folder screen, and I can't get the Mac past said screen without using the keyboard. Does anyone know how I can connect the two devices?
Thanks.

The flashing folder with the ? mark indicates that a bootable system can't be found. You'll need to borrow a wired keyboard so you can boot into the Recovery volume (boot with the Command + R keys held down). From there you can reinstall the system and try a normal reboot.

HT1750 start up question mark

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