Installation :: Grey Flashing Dash On Black Screen When Booting?
Aug 8, 2015
What does it mean when you see a black screen that has a grey flashing dash located at the top left-hand corner of the screen? It moves down a bit before finally moving onto the Windows 10 logo, where it sometimes gets stuck and reboots (and the grey dash screen appears again before moving on).
I noticed this issue both during upgrade (when it failed and tried to recover the installation) and after installation. This issue occurred on an Acer Aspire Z5801. It does not occur on Windows 7.
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Nov 12, 2015
When I turn on my laptop, it shows a black screen with non-flashing dash on top left after Lenovo logo. I did the clean install but it didn't work. After that,I tried to clean install Windows 10 on my old HDD and it works! Why my SSD isn't work?
P.S. It can enter the BIOS menu
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Aug 8, 2015
I have downloaded and successful installed Windows 10 on one of my two computers. When I downloaded to second computer it hung on the installation re-boot. Now machine will only display BIOS splash screen and then shows a black screen with a single fast flashing cursor.
I tried putting the original Windows 7 install disk in the DVD but could not boot that way either. I can not get in contact with Windows support in Australia and have not been able to find an email address.
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Aug 23, 2015
So i don't know what happened to my computer last night (Maybe it did an automatic update) I did a normal shutdown, and in the morning after I couldn't boot my Windows 10. It won't go pass the black screen with the blinking dash. I don't want to do a fresh install. I got all my important files in this computer.
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Oct 7, 2015
Today when I started my computer I logged in and after than I get a black screen with my cursor and desk bar flickering and can't do anything. When I press ctrl all delete and go to task manager it says nothing is running. I can't click anywhere or do anything except start up the task manager..
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Aug 6, 2015
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Jul 31, 2015
I have an Acer Aspire 5830TG-6642 Laptop, i upgraded to windows 10 last night and upon opening my laptop today and resuming i cannot proceed past a black screen with a flashing underscore in the top left corner.
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Jul 30, 2015
If you have an on board Intel graphics controller as well as an add on graphics card, windows thinks you have one more monitor connected than you actually have. so when windows loads its outputting the video signal to a bogus monitor.firstly wait long enough so the mouse cursor to appear when you move the mouse.(blank screen with a white mouse cursor).Then press the space-bar and enter your login password or pin (yes your doing this blind)
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Sep 13, 2015
This is weird. I rebooted and the windows logo showed up but then it went to a flashing black and white screen. I rebooted a few times and the same thing.
Then I tried F8 while booting (thinking that would get me to safe mode) and it booted fine. BUT, it didn't look like it went to safe mode (not sure if it is obvious in Win10 since I haven't booted to safe mode yet). I rebooted a few more times and all OK.
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Oct 18, 2015
PC froze and wouldn't ctrl-alt-del, so I turned it off from the power supply, and when I turned it back on, I get a black screen with flashing cursor just after the BIOS splash and just before the Windows symbol would normally appear. I've used a recovery usb - refresh, automatic repair, and system restore do not work, and I can't continue booting with the usb, can't get to safe mode.
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Oct 13, 2015
Recently I've started to encounter an error when booting my computer, occasionally it would boot to a weird flashing white and black screen. An example of this can be seen here: [URL]....
This occurs just before the login screen. While this happens, my cursor is still visible, though larger than normal. After a while, the flashing stops and the screen stays black, usually before this I would force restart my PC then it would boot fine.
General specs:
GPU: Asus gtx 980 strix
CPU: i5 4690k
Motherboard: Gigabyte Gaming 7
Ram: G.Skill Trident 2x8gb
PSU: Thermaltake Gold 650watt
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Nov 17, 2015
I was using Windows 7 for about 2 years until I stumbled upon Windows 10 last month.I upgraded to it and used it happily for 2 weeks,give or take.Then the problems occur.
One day,after loading to BIOS,it booted to a black screen.No login screen,no cursor,nothing.I tried using the Windows troubleshooting utility and I've exhausted every option besides the wipe all your data option.
I tried booting with cmd, but it didn't do anything.Resetting PC with files intact also did nothing.Startup repair was the same case.System restore did not let me roll back due to some technicality.
In the meantime,I've tried installing Windows 10 on my other HDD,only to face the same issue after I rebooted.The Windows Media USB also did not work.
I'm really out of options here as I need to get some of my files out from my Caviar Black before I reformat it if I have to.
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Sep 8, 2015
I have a Samsung laptop. I had Windows 10 for about 2 weeks and everything was fine until last week. When I press the power button, the Windows 10 icon appears with the loading icon. After that, I'm getting a black screen for about 3 minutes then my login screen appears and everything is fine after that.I thought it may be something corrupted with my OS so I decided to reinstall Windows 10 from scratch and not to keep my files and programs. I found out yesterday that this wasn't the solution to my problem because I reinstalled it and it keeps making it again.
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Jan 8, 2016
My PC has been acting up for about a week now. I have 2 Samsung 24inch Monitors and a decent gaming PC. I have tried all the options this forums has brought to me such as control alt delete and recovery mode, nothing has worked so far. I have just upgraded from 7-10 and it just wont start up without booting to that black screen.
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Jul 30, 2015
I have a dell insperation and after having upgraded to windows 10, I came across a few issues. The update when well and windows 10 is working on my laptop, however, I have an issue where I am presented with a black screen when i start my computer. I do see a dell screen and a windows boot screen before it goes black so i know the issue is not a hardware issue, however after the windows boot screen passes (the one with the blueish window icon) the screen goes to black, but it is still on (meaning the monitor is still turned on just not displaying anything). The reason i know that windows installed fine is that external monitors do work, just not my laptop monitor. I have already reinstalled windows 10 and have made sure all my drivers are up to date. Windows 10 is just not recognizing my laptops screen as a usable monitor.
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Feb 3, 2016
I did an update a week ago and after that Windows 10 will boot to black screen without cursor.
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Sep 21, 2015
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Dec 1, 2015
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Oct 7, 2015
I've seen the regular dashes on startup, but now, a dash comes up on the screen, and doesn't move. It just stays stuck.
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Sep 3, 2015
I have msi laptop Windows 7 now I updated online to Windows 10 and reset. After reset now my laptop screen is blank and dash line blinking on top left side. Nothing working tried lot by pressing f10, f2, ctrl+alt+del...
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