Security :: Windows 8 Laptop Flashing Screen At Login Menu?
Apr 20, 2014
i was customizing my desktop with Rainmeter and i wanted to know how to change my toolbar's color because i didnt want the blue, someone said to download Vistaglazz and repatch some files. after doing so my computer restarted and after the initial normal startup and it saying "Please wait..." like it usually does before it shows the login users, the screen went black, then for a split second the screen went pitch black, almost as if the computer turned off, then it would turn on again and go back to the normal "Please wait..." screen. this would be ok but its happening so fast and over and over again that i cant even hit f8 or Ctrl Alt Delete. im using a different computer because i literally cant log onto the other one.
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Nov 21, 2012
I was messing around with my screen resolution settings when I switch over to portrait mode on desktop PC. When I hit apply the screen started flashing and it went to protrait. I saw thye option to revery back but with they screen flashing I couldn't hit it. Then the settings set in and the screen went back to the sigin in menu in portrait.
I can enter my password, sign in, and then it tries to load the start menu but the screen starts flashing and after about 8 seconds, it goes back to the sign in menu. Now I am stuck in this process and cant get back past the sign in screen to access the control panel and set the screen back to landscape.
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Apr 4, 2014
I have a Windows 8 HP laptop and the screen is just flashing. I have looked through other users posts and tried a few things but nothing is fixing the issue. I can't get past the flashing screen to enter Control panel, Safe boot or anything as the flashing is preventing me getting anywhere!! Lots of photos not backed up so don't want to lose them!
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Feb 24, 2013
I woke up this morning and found my computer had shut off in the middle of the night. I thought maybe an update. When I turned on the computer to my surprise I found this....
As you can hear in the video no matter where I click all it does is flash...
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Jul 11, 2013
How can I stop avast from making a black screen popup.
How to solve Windows 8 black screen problem after login - It didnt work.
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Mar 25, 2014
I have only one administrative account associated with my Windows 8 PC. I have this said account password protected yet my child can bypass the logon screen by merely resetting the PC. What kind of security is this?
How can I go about setting it up so that a password is require regardless of whether the PC is reset or not?
How are we suppose to go about keeping our children from unmonitored PC access if they can simply reset/shut down the computer and bypass it?
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Oct 26, 2013
I removed the password login screen on my wife's Windows 8 laptop, so the laptop boots up to the Desktop with no login requirement. She no longer has Administrator privileges. Control Panel/User Accounts show a password protected Administrator user and Local Account Password protected Administrator user.
I want to run Chkdsk since her HD has a read sector problem but need full Administrator privileges to do so.
How do I restore the password protected Administrator logins?
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Nov 20, 2012
My PC was working fine before today, until I used Ultra UXtheme patcher for Windows 8 x64 and then applied a custom VS for Windows 8.
After a restart, Windows Explorer was not launching, so I opened task manager and did a sfc /scannow. After a reboot, I get to the Windows 8 boot menu (I have a dual-boot on this HDD with win7), and then the screen just turns on and off every few seconds, with the numlock light flickering with the screen.
I tried using the automatic repair, both from the boot menu and from a backup USB, but it does not detect anything. and I still have the same issue.
I restored the backups of uxtheme.dll, uxinit.dll, and themeui.dll, but that didn't work either.
Attached is my ntbtlog.txt.
There is no BSOD, the HDD keeps on spinning a few minutes after boot, and the numlock keeps on flashing. Anything else I can do from my win7 install? I'm currently trying to delete the theme.
Deleting the theme doesn't work, safemode doesn't work either. It seems to be a driver issue, but there were no driver updates when it was working?
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Oct 26, 2013
I have a problem of windows 8.1 and my laptop (HP EliteBook 8560w). My display is full HD (1920x1080), 15.6", GPU: nVidia Quadro 2000M. When I installed windows 8.1 (all version, 64 bit) the GPU driver is updated automatically at lastest version (327.31). But some 3rd application ex: Google chrome... is blurry. Then, I chosed the option "Let me choose one scaling option for all my displays" at 125%. All thing is OK.
But whenever I started my windows, my display always flashing one time, about 1-2s. it's very inconvenience. Because of that problem, I downgrade to windows 8.0. But i still want to use windows 8.1 ....
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Jul 7, 2013
I received my laptop (Dell 17r SE) about a week ago but I have been having trouble with it's boot time. From pushing the power button, it takes anywhere between 5 and 10minutes to arrive at the login screen.
I checked the event log for Diagnostic-Performance, and the eventID100 has popped up quite a lot as "critical." I go into details and the stats are not looking to good. These are the times for multiple boots:
BootTime 175799/153962/217864/640216(This one was the first startup that the laptop ever did)
MainPathBootTime 122899/90262/135072/564816(This one was for the first startup that the laptop ever did)
Along with that critical error, I get other warnings saying apps/drivers/services like Svchost, rdbss, gpsvc, SMSSInit took longer than expected to initialise, thereby slowing startup.
I'm not sure if this is useful but apart from that, the log also shows EventID500/501 error events that state that The Desktop Window Manager responsiveness has degraded due to heavy resource contention.
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Jun 7, 2014
I turned on my laptop and after I logged on all my letters were replaced with symbols. I then restarted my laptop and now even my log in screen is symbols and when I get to the desktop my screen just keeps flashing and I can't click on anything. It just keeps flashing and loading nothing. I can't do anything on it. I didn't install anything the last time it was on either and I'm the only person who uses the laptop.
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Oct 4, 2013
I recently started having the black screen with the flashing cursor come up sometimes when I start my PC. I have narrowed it down as being my 3rd HDD (2TB WD) as the culprit, which I only use as media storage. It is not set as a boot device since windows is on my SSD and when I unplug the drive from my mobo, windows always starts up without any issue.
Basically my question is, is this just a case of a hard drive going bad? I ran chkdsk on all 3 drives and none of them had any issues and it is not fragmented or anything that I can tell, so I don't know. I have had this setup for a while now and about a month ago it started doing this. The screen doesn't always come up however, so I have no clue what the issue is.
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Sep 15, 2014
I had to reinstall the whole machine from scratch because old HDD has been playing up. This is what I did:
1. Imaged old (faulty) drive to new one - just because I needed some data out of it and the old one was very slow and freezing.
2. run the system with new imaged drive - all working except sometimes it was playing up, so I decided to upgrade to another drive with Windows 8.1 from Win7
3. have plugged in new HDD to SATA0 port and the imaged drive to port SATA2
4. installed Windows 8.1, copied data over, reinstalled applications and so on.
5. all working perfectly. Now every time I boot up the machine, I'm offered options if I want to boot to Windows 8.1 or Win7. No problem there.
6. Now I wanted to remove the imaged HDD from SATA2 port, so I did - and here comes the problem:
All I get now is the black screen with flashing cursor in top left corner. How is this possible ? When I plug the second drive in all works as before. I just have to remove the second drive. How can I do this? In the attached image you can see my drives from Windows 8.1 the Disk0 is the one I need to keep - that's a Windows 8.1 ( C: ) Disk1 (imaged HDD) is the one with Win7 on it and needs to be removed.
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Sep 15, 2014
Windows is asking me for a password despite I've never had a password.
Here's what happened:
I've never had a password and choose during the win install to have 1 local account without password.
I used to have a user/login name with an non ascii character (é), and it was causing me some trouble. Hence I decided to change it with ascii only characters. Control Panel, users etc ... properties, changed the name of the local user.
Reboot, and boom, Windows asks me for a password and is displaying the former user name !! But there's no option to change the user name, I've read that there should be a back arrow but it's not here (probably because windows "thinks" there's no point since there is only 1 user).
I don't know what to do, I used a Linux live usb distro to use some tools that can reset password and unlock account, however:
1/ it can only reset password, which seems not to be the issue here, the issue is the wrong user name
2/ the linux tool shows 1 local user with the last update name
So I'm guessing windows is not using the proper name to login, but doesn't provide any mean to change it.
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Jul 3, 2013
I have recently installed a new Video Card a Gigabyte GeForce 660 GTX, when I'm playing video's or if I open the Geforce Experience program from the task bar the screen goes blank for about a second then returns to normal, it always seems to happen when I get the program to check for updates. I am using the latest driver 320.49.
When I play games there's no problem occur so I don't think it's the card it's self, I suspect it's something to do with the program.
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Aug 26, 2014
Everytime I wake it up from sleep, it got BSOD. Sometimes this BSOD occured even when I turn my laptop on, after the login picture showed up. It shows: Kernel security check failure.
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Jul 14, 2014
I have recently installed windows updates and after restart the black screen occurred after I typed my password. About five days before that I have reinstalled my Mobile Intel 4 series driver and now in Device manager it shows 3 grayed out monitors which were installed when I have reinstalled the Video driver. The monitor driver that Is currently loaded was installed when I installed the OS itself.
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Jul 16, 2014
Just had this new 8.1 and a bit confused on the start menu, On the windows 7 when I clicked on the start bottom left I had a range of programs there that I could select.
i:e my documents,my pictures,my music,my video control panel,devices and printers,default programs.
How do I get that option to show like that on this 8.1 ....
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Mar 17, 2013
This morning I woke up to find that I could not log in to my windows 8 computer. The first 'lockscreen' would appear, but the when I clicked to go to the next screen to log in, all I see is text in the bottom right hand corner telling me about windows updates that will automatically update in two days (I have already installed most of the newest WUs).... Having issues with the latest WU?
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Oct 18, 2013
Just installed 8.1. When I logged back on, there was only a blank screen with a cursor. I activated task manager and a warning appeared stating, "?CreateRect@Value@DirectUI@@SAPEAV12@HH... could not be located in the dynamic link library C:WindowsSystem32Windows.UI.Immersive...
SFC scannow fixed the issue for awhile then i got force logout then i login the same issue reappear... I dont feel like doing fresh install ...
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Aug 12, 2014
After installing a game of Minecraft he claims that around that time, the computer has not been able to boot. So he brought it over to me, and I'm not to familiar with Windows 8. So I try turning on the laptop and it freezes at the login screen. It has his username, and the little loading screen like its trying to load the account, then it freezes and it stops there. So what I'm trying to do is a system restore to an earlier time. Maybe even to boot into safe mode. How to access System Restore is to hold shift while restarting the computer. Except I can't access the computer. It doesn't go past the login screen. I can go into the BIOS, but nothing else. Any method were I can do something to access system recovery another way? What I can do besides a system restore? But simply put.. Turn on, goes past the Asus loading screen, gets to login screen, username is displayed. Computer freezes. Sometimes it just goes to a black screen and stops there.
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Jul 10, 2013
For some reason after I sign into my user on my desktop, A blank screen appears and nothing loads. I tried the avast configuration since I'm using avast but it didnt work. I tried scanning the system in command promp and it says one corrupt ile was repaired...
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Aug 19, 2013
I have noticed on all my clean installations of Windows 8, that there is 10 Second Hang before the login Screen. (Nothing but a black screen). It gets pretty annoying when you're often changing in between a triple OS set up.
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Jun 12, 2014
I updated my laptop from Windows 7 64bit to Windows 8 64bit and forgot about it for months and months and months
Then I changed ISP and, again, did not login to the laptop....
Now when I try to login the "Welcome"wheel turns and turns then returns to the login prompt. It says "Locked" near the wheel....
Anyway I can login without have to re-install?
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Nov 5, 2012
Recently I downloaded the new Windows 8, replacing Windows 7. It was running flawlessly for a few days until recently when I restarted the computer, it won't even show the login screen. Everything is black, and I cannot even see my mouse pointer. I've been reading several people's similar problems saying to go into safe mode, but It won't even boot me into safe mode when I try. The screen just goes black.
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Jun 3, 2014
So recently I downloaded windows 8.1 onto my Asus laptop and my apps on the start menu will not work. whenever I click on them the apps blink or flash and don't open, I try clicking on them again but same thing happens the screen will blink them disappear again.
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Oct 12, 2012
How do you change Windows 8 to startup with the list of users on the computer rather than the user who logged in last? I know you can hit the back button but it's just annoying adding unnecessary steps to logging in. How to change this?
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Jul 31, 2014
I shut down my computer last night. It runs 8.1 and when I shut it down I do not believe it installed updates.i tried to boot it. It boots and after I type in my PIN, shows my desktop for a few seconds. Then, my display will either turn black or a blueish grey. There is no cursor. It does this every reboot now. I can not do anything except reset when it happens.
System info:
Two GTX 760's in SLI
Two Asus monitors
Possible culprits:
1 - I have Actual Multiple Monitors trial installed. The freezing/display blanking seems to happen when the trial time left window shows up, but that may be coincidence.
2 - I heard graphics card driver updates and windows updates can clash in some way and cause a similar issue. From what I've read, a cursor is still on screen and task manager can be opened with CTRL SHIFT ESC. Neither of these work for me.
3- Virus? I have avast so I doubt it.
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Apr 1, 2013
I have had Windows 8 since it came out and a little while after I started having issues with it not waking up/randomly freezing. I reinstalled 8 and for a while I have not had any trouble but now I am having issues again.
Basically the computer randomly freezes... but not really. So certain things don't work like opening or closing applications but the cursor can still be moved. Eventually most things won't work but again the cursor is still moveable.
Then again tonight it happened when I got home from work. This is the same problem as before. My computer was left on and locked and when I returned the logon is missing but my cursor is there and moveable.
I have been trying to fix this since the last time it occurred and still cannot find why this is happening. I have the latest drivers, ran scans with Bitdefender and Malwarebytes, checked the event log but nothing shows up from the time I left to the time I got home. I've attached a picture showing the screen frozen with just the cursor and no username/password on the screen.
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Sep 21, 2013
I'm using Windows 8.1 Enterprise RTM
At the login screen I see my user ID and a Guest user. Can I hide the guest user at login screen - I only want to see my user.
I DON'T want to boot in bypassing the sign on screen. (Note this is NOT the same as booting direct to desktop !!!).
This is new in Windows 8.1 RTM - I never had this in previous editions of windows.
(Note I really don't want to DISABLE the account - I just don't want to see it at login).
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May 5, 2014
With Windows 8.1 Update 1 Enterprise 64 bit, how do I make sure that, when I start the computer, the Login Screen is displayed immediately?
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