My girlfriend's step-dad had connected an external hard drive to our Imac to put some files on the computer and give him some more room on the HD. The computer froze and he was unable to force quit. He decided to turn off the computer and disconnect the HD from the Imac. Ever since, when I turn on the computer, the screen goes white/blank and a folder with a question mark flashes or sometimes stays. I have tried many attempts to reboot, pressed different commands in the hopes of it rebooting. Any and all help would be greatly appreciated.
Sincerely,
Phil
The flashing folder means that the computer can't find the boot system on the hard drive. If your girlfriend's step-dad has removed some parts of the OS, then the system will not start giving the 'flashing folder' result. You will need to re-install the OS from the system disk.
Insert the disk into the computer and it will boot from that and take you through the install procedure.
Plug the external hard drive into your laptop or desktop computer.
Most external hard drives do this through a cable connecting the hard drive to the USB outlet on a computer.
Plug your external hard drive into a wall outlet if it receives power from an AC adapter rather than your computer.
Click on the "My Computer" icon on your desktop, and open the external hard drive.
It will be located under the USB connecting drive, which is labeled with a letter ranging from "E:" to "K:".
Open the folder on your external hard drive where you would like to save the photographs.
usually in my documents my pictures or if you want to save them to a specific spot so as not get them mixed up.
Create a folder if one is not present right click in my documents select new folder and name it lets say my pics 1
Move this window to the bottom right corner of your screen to be used in future steps.
Open the folder on your home computer where the files are being stored that you wish to transfer to the external hard drive.
These may be on the desktop, in "My Documents" or elsewhere in your computer.
If you are unsure where they are located, you can always search for them by file name by going to "Start" then "Search."
Right-click on the photo file, and select "Cut."
Click on the window showing your hard drive files to bring it into use on the screen.
Right-click on the white space in the window where you would like to transfer the files, and select "Paste."
Your files have now been deleted from their original location and transferred to your external hard drive in the folder you selected
hope this helps
Check for a failing hard drive
Trying booting from the Mac OS X install disc.
insert the Mac OS X install disc.
press the start button, while holding down the "C" key on the keyboard
Once you are running from the disc. go to Disk Utilities select the hard drive click the "repair permissions" button at the bottom.
If you get any red errors listed or it doesn't seem to finish repairing the permissions you have a failing hard drive and it will need to be replaced.
The vertical lines is one of two thing a failing LCD module of a failing video card.
Here is how to check which one it is.
connect an external display to it.
if the lines show on the external display is a video card. Unfortunately the video card is attached the logic board and the whole logic board will need to be replaced.
If the lines don't show up on the external display the LCD module will need to be replaced.
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I tried the suggestions and the computer screen still remained blank.
Our Mac is doing the same thing. So we tried rebooting while holding down the "c" button... but nothing happened...other than the blinking folder with ? showing up.. please help!
Have you tried to plug in the external hard drive and reboot. The iMac may be looking for somethig that was put on the HD by mistake.
Also, if you have your disk one of the installation set, boot with it. You can do so by holding the letter C down while the computer reboots. Then you can run diagnostics test. You may be able to run a repair of the OS this way.
Let me know....
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