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Blinking white underscore upon startup (Help)


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#1 MisterLefty

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Posted 08 March 2014 - 09:12 AM

Hey,

I guess the easiest way to start off is with the problem.

When I try to start up my computer, it will always end at a black screen with a blinking white underscore.
The computer will not boot up any farther than this.
it will get passed the "gateway" logo with the option to hit "Del" or "f12" to go into setup and then boot options.

I am honestly not sure if this is a windows 7 problem with my computer. But this seemed like the most likely option that it could be because I can still boot from my CD drive.

I have made a "Windows 7 recovery disk" from a laptop that is at my house , I have tried to go and use all the options that come with it.

The first option being one that is supposed to fix things wrong with windows 7. Every time i click it, it asks for me to unplug any extra things plugged into my computer and then try again. the thing being with that, I have nothing else besides a keyboard, mouse, monitor and power plugged in.

I have tried to use the system restore option and restore it to an older point. But after it runs for a bit, it says it cannot be restored to that previous point because of an unknown error.

I am not sure what the problem could be. I was hoping someone could lead me to another method of trying to fix the problem.

Thanks for taking the time to read this post.


Edited by MisterLefty, 08 March 2014 - 09:18 AM.


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#2 dc3

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Posted 08 March 2014 - 10:53 AM

The black screen with a blinking cursor can be a difficult problem to fix because there are so many things which can cause this.

 

Can you boot into Safe Mode?

 

To boot into Safe Mode press the power button and immediately start tapping the F8 key until you see the Advanced Boot Options.

 

Use the up or down key to navigate to Safe Mode, then press Enter.

 

 

If you can't access Safe Mode try doing a Repair Installation (In place upgrade).

 

Instructions for a Windows 7 Repair installation.
 
A Windows 7 Repair Installation will require a installation disc.
 
If you do not have a Windows 7 installation disc you can download a free legal ISO image of Windows 7 SP1 at  Windows 7 Forums.  You will need to download the same version of Windows 7 that you have installed,  This image is hosted by the Digital River store which is an official distribution partner of Microsoft.  This is a genuine untouched image which is safe to download. 
 
 
Attention:  If you do have a Windows installation disc, skip Part A and go to Part B, Step 1b.
 
 
Part A, Steps 1a - 6a
 
The ISO image will need to be burned to a DVD in order to create a bootable installation disc.
 
1a)  To burn a ISO file to a DVD please download ImgBurn and install it.
 
2a)  Insert a blank DVD into your CD/DVD drive tray, and then close the tray.
 
3a)  Open ImgBurn, and click on Write image file to disc.
 
ImgBurn1_zps715cb1c2.png
 
4a)  Click on the Browse for a file icon:
 
ImgBurn2_zpsaea72ba9.png
 
5a)  Locate the ISO file you want to burn, and click on the Open button.
 
6a)  Click on the blue arrow to start burning the bootable DVD.
 
imageburn11_zpse44f577b.png
 
 
Please note:  In order to boot from this DVD you may need to change the boot order in the BIOS so that the CD/DVD-ROM is the first device in the boot order, and the hdd is the second device.
 
 
Part B, Steps 1b - 10b
 
1b)  Place the installation disc in the tray of the CD/DVD drive, close the tray and restart the computer.
 
2b)  You will be prompted to press any key to start the installation, I find the space bar handy.
 
At this point the setup process will load files, this will take several minutes.
 
3b)  You will now need to choose the  Language, Time, currency format, and Keyboard or input method that you'd like to use.
 
After this is done click on Next.
 
w71_zps6dbda47e.png
 
4b)  Click on the Repair your computer link at the bottom-left of the Install Windows window.
 
This link will begin the Windows 7 System Recovery Options.
 
w72_zps2a656a0c.png
 
5b)  System Recovery Options will now search your hard drive(s) for any Windows 7 installations.  This will take several minutes.
 
No participation is required on your part at this time, wait till it has finished and the next window opens.
 
w73_zpsd5483f05.png
 
6b)  Choose the Windows 7 installation that you'd like to perform the Startup Repair on, then click on Next
 
w74_zps490f9a17.png
 
7b)  Click on the Startup Repair link from list of recovery tools in System Recovery Options.
 
w75_zps9941e858.png
 
For a future reference, there are several other diagnostic and recovery tools available in the Windows 7 System Recovery Options including System Restore, System Image Recovery, Windows Memory Diagnostic, and Command Prompt.
 
8b)  The Startup Repair tool will now search for problems in the system files.
 
If Startup Repair finds a problem with any system files the tool may suggest a solution which you will need to confirm, or may solve the problem automatically.
 
w76_zps3dd75d83.png
 
9b)  Startup Repair will now attempt to repair whatever problems it found with system files.  
 
Note:  If Startup Repair did not find any problems with system files you won't see this step.
 
w77_zpsd8be95eb.png
 
Important: Your computer may or may not restart several times during this repair process.  This is normal, you should allow it to continue until you see the Restart your computer to complete the repairs window. 
 
10b)  Click on Finish, this will restart your computer.
 
w78_zpsd49257fb.png
 
It is possible that the Startup Repair will not be able to fix the problem.  If the Startup Repair tool determines this, it may automatically run the the repair after your computer restarts.  If it does not automatically run the repair but you are still having problems with Windows 7 repeat these steps to run Startup Repair again manually.
 
 
If the Startup Repair doesn't work go back step 1b and continue to 7b.  In step 7b click on Command Prmpt in the System Recovery Options.
 
When the the elevated command prompt opens type in bootrec /rebuildbcd and press Enter.  This will take a while, please be patient.
 
If all goes well you will receive the following message.
 

Successfully scanned Windows installations.
Total identified Windows installations: 0
The operation completed successfully.

Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#3 MisterLefty

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Posted 08 March 2014 - 12:39 PM

I am thankfull that you took the time to post this for me.
I am in the process of downloading it as I type this out.
I will post back with my results when they are done.



#4 dc3

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Posted 08 March 2014 - 12:51 PM

I forgot to welcome you to Bleeping Computer in my first post, consider yourself welcomed. :thumbup2:

 

I'll be around.


Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#5 MisterLefty

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Posted 08 March 2014 - 01:30 PM

Is it possible to put this on a flash drive?
At the moment I do not have CDs with large enough space to burn the file.

And thanks for the welcome.



#6 dc3

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Posted 08 March 2014 - 01:40 PM

Try the instructions here.


Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#7 MisterLefty

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Posted 09 March 2014 - 08:55 AM

Okay, so I downloaded it onto a usb drive. Upon trying the Startup repair. It had told me that if I had recently plugged in a camera or music player to unplug it then try again. And if I continue to have this problem that I should contact my system administrator.S
 

So I went to the command prompt option and it had shown the

"Successfully scanned Windows installations.

Total identified Windows installations: 0
The operation completed successfully."
after a few moments.

I am unsure of what to do now.


#8 dc3

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Posted 09 March 2014 - 11:25 AM

Did you change the boot order in the BIOS so that the USB device is the first item in the boot order?


Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#9 MisterLefty

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Posted 09 March 2014 - 01:56 PM

While under the BIOS it does not list the USB as an option.
The options are "Harddrive, CD, Removable device (Which I did set to the first thinking it was the USB), EFI, and then LAN"


Edited by MisterLefty, 09 March 2014 - 02:01 PM.


#10 MisterLefty

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Posted 09 March 2014 - 02:09 PM

Okay, I was exploring in the BIOS menu and found how to set the Flash disk to boot first.

 



#11 dc3

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Posted 09 March 2014 - 02:18 PM

Let us know how what the Startup Repair finds.


Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#12 MisterLefty

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Posted 09 March 2014 - 02:20 PM

I retried it and I had gotten the same results.

The Command promt says the successful text.
And the startup repair still shows the same options.
About the camera or media device being plugged in.



#13 dc3

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Posted 09 March 2014 - 02:35 PM

When you click on the Command Prompt option you should see a widow like the one below.

 

elevatedcommandpromptw7_zpseba8c499.png

After the text in the elevated command prompt appears, type in bootrec /rebuildbcd and press Enter.

 

Hopefully you will receive the following message.

 

Successfully scanned Windows installations.

Total identified Windows installations: 0
The operation completed successfully.

Edited by dc3, 09 March 2014 - 02:36 PM.

Family and loved ones will always be a priority in my daily life.  You never know when one will leave you.

 

 

 

 


#14 MisterLefty

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Posted 09 March 2014 - 02:36 PM

Yes, sir. I have said that I already did that and gotten that message.



#15 MisterLefty

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Posted 09 March 2014 - 02:37 PM

And it takes only a few seconds for it to show that message. It doesn't take long at all






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