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PC won't boot some external devices attached/on

Why won't my pc boot if my qmenory external drive is still plugged in? Once it happened when I left a thumb drive plugged in. And today it happened when I left the scanner on last night. Some external hard drives are just fine.

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  • qanda53 Apr 30, 2010

    But I can leave my WD drives up and a fantom raid drive. The first time was with the thumb drive. Unplugged it...still wouldn't reboot.
    Unplugged the second monitor and it finally rebooted. Yesterday it was the QMemory drive. Shut down, unplugged drive. No go. Then unplugged monitor and WD and Fantom and rebooted OK. Last night I left the scanner on...same issue. This time I only had to do the hard shut down and reboot with the scanner off.

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Some computers need to have all external drives unplugged before they will boot up because it cant tell the difference between which drive to boot from.
hope this helps.

Posted on Apr 30, 2010

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Free usb reboot


You might want to boot from a USB device, like an external hard drive or a flash drive, for many different reasons.
When you boot from a USB device, what you're actually doing is running your computer with the operating system that's installed on the USB device. When you start your computer normally, you're running with the operating system installed on your hard drive - Windows, Linux, etc.

How To Boot From a USB Device
Change the BIOS boot order so the USB device option is listed first. The BIOS is rarely setup this way by default.
If the USB boot option is not first in the boot order, your PC will start "normally" (i.e. boot from your hard drive) without even looking at any boot information that might be on your USB device.
Tip: The BIOS on most computers list the USB boot option as USB or Removable Devices but some confusingly list it as a Hard Drive option, so be sure to dig around if you're having trouble finding the right one to choose.
Note: After setting your USB device as the first boot device, your computer will check it for boot information each time your PC starts. Leaving your computer configured this way shouldn't cause problems unless you plan on leaving the bootable USB device attached all the time.
Attach the USB device to your computer via any available USB port.
Note: Creating a bootable flash drive or configuring an external hard drive as bootable is a task in itself. Chances are you made it to my instructions here because you know whatever USB device you have should be bootable after properly configuring BIOS.

  • Restart your computer.
  • Watch for a Press any key to boot from external device... message.
  • On some bootable devices, you may be prompted with a message to press a key before the computer will boot to the flash drive or other USB device.
  • If you do nothing, your computer will check for boot information on the next boot device in the list in BIOS (see Step 1) which will probably be your hard drive.
Note: Most of the time when trying to boot to a USB device there is no key-press prompt. The USB boot process usually starts immediately.

  • Your computer should now boot from the flash drive or USB based external hard drive.

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First you need to have media ready to install once format is compelte.

You can not format a drive you are currently using an operating system unless you run the operating system setup disc in which case you would be booting and running from cd once you start reloading you main drive.

So if you are loading windows .
Review steps below if when you boot you do not have option to select boot device

Boot you laptop / pc and get into the BIOS
<normally f2 or f8 , f12 depending on system.>

Change the BOOT order to cdrom as primary \ you may see the device as USB CD/DVD rom with the actual name of brand there.

Save and exit

Have operating system in cd/dvd rom attached to device

Once it starts to load you will see BRIEFLY in the upper left corner PRESS ANY KEY TO LOAD FROM CD ROM or something similar... stop reading this and press a key ........


From there it should prompt you for setting up a new os, I prefer linux myself but in windows or linux in the setup process you have the option of just loading the operating systems or DELETING THE PARTITIONS and FORMATTING the drive, therefore wiping i .

NOTE: THIS IS NOT WIPING YOUR DATA, if you are trying to hide something, wipe from your drive past **** you never wanna share with anyone again..... repost under how do i wipe my hard drive clean .. its a completely different story .. not hard but different.

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restart the system, while restarting , press delete/F8 to enter in BIOS menu, select boot priority and select the primary HDD as first boot device, deselct the "boot otehr device" option.
it should work fine.,
Cheers!

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Just installed windows 7 with an external cd/dvd and now it will only boot with the cd/dvd attached. otherwise a black screen appears with the cursor in the top left corner.


when it boots to a flashing cursor in the top left corner and everything else it working, this means that it is NOT finding the operating system on the hard drive, many times due to boot sector issues.
Make sure you set your hard drive to main or first startup device.

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1 Answer

PC won?t boot if my qmenory external drive is still plugged in?


go to bios, choose second optin, find disk boot priority, select your externel hard disk and click the minus button on the right side of your keyboard so it will be recoghised as the second hard disk. save and exit.

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When my Maxtor basic External Hard Drive is conected my PC won't boot up.


Verify in the BIOS setup (usually accessible by pressing F2, F12, or Del at boot), "Boot Device" submenu, that the system isn't programmed to also boot from an external device. If it is, it will try to boot off the Maxtor, but won't be able to since there's no OS there.
The system should be configured to start off the internal hard disk, and optionally the CD-ROM. Other options (ROM BIOS, PXE, USB, etc.) are usually best left deactivated or at lowest priority.

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Start "Device Manager".
Make sure that the USB devices are "ready" and "enabled".
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Can you try the Maxtor external device in some *OTHER* notebook?
If it does not work, then the Maxtor device has a problem.

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My 160GB Crossfire is not recognised when connected to any of the USB ports. It used to be, but then I've had some other PC issues recently that meant a forced closure of the PC and I'm concerned that...


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You may want to test if another computer recognizes the device being plugged in to see if it is still functioning. You may want to also try plugging the device into a different USB port on your computer.

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