Constant Blinking Underscore On Boot Up
Sep 1, 2012
I have an HP laptop that upon boot-up would show the HP logo and then go to a constant blinking underscore on the upper left hand corner. During the HP logo screen, I pressed f2 to enter "HP Startup" where I scan the hard drive and it passed all the test. Also I can go into the BIOS by pressing f10.
From my research, I changed the order of boot-up and put local hard drive at the very top. I also unplugged the battery. And laptop is still not working. I also read that perhaps putting in a System Repair Disk might work(?) But I just discover that my cd-rom drive is not working. What would be the best way/ or my options in going about to recovering my data?
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Dec 14, 2011
About two hours I was doing a recover in my hd (with Acronis true Image 2010) when at 1/3 of the process the computer rebooted. I thought it was normal, but soon after the image of the motherboard appeard, a blinking underscore emerged and the boot does not proceeded. I have tried changing the boot to dvd and hd (in the bios), also I tried to put the windows disk but the option to boot from cd does not appears. ie, the PC starts, the image of the motherboard appears and then immediately the undersore flashing.
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Sep 9, 2010
I just upgraded to Windows 7 on my Toshiba Satellite Special Edition laptop that came with Vista 64bit and the other night i downloaded iTunes 10 and told me to restart my machine so I clicked ok and then my laptop shut off and when it came back on the Toshiba screen came up as usual but seemed to stay on longer than normal then it goes to a black screen with a underscore that blinks for a few moments then becomes solid. Ive tried to use the "F" keys to get different boot options because i have the windows 7 ISO disc and a ubuntu disc that I could use but whatever i try my laptop wont process it just does the same thing over and over again and bever proceeds to the actually boot up windows.
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Aug 31, 2011
I am having a major issue with my laptop! First, here are the specs:
HP G60 Notebook PC
Windows 7 home premium
Pentium Dual Core T4300
Total Memory 3072 MB
BIOS version F.53
Just recently i got a virus and since i dont have much money i didn't have protection. I used my system restore to get past it (not the first time i had to do this). I dont remember if i was able to use the laptop after that or not, but it was only a day later that i noticed the laptop wouldn't boot into the OS selection screen (I had Ubuntu installed also, so i had to select between that and windows 7). At any rate, i will press the power button, then it has a screen that shows HP's logo, then changes to a blank screen with a blinking white underscore in the top left of the screen.I reset, then pressed ESC immediately on start and ran a few tests by selecting "System Diagnostics" which is selected by using the F2 key.
100 percent of system memory tested OK
Hard Disk passed Quick Scan
Hard Disk passed Full scan
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Sep 29, 2012
i have a acer aspire 5336-2460 laptop, everytime i try to boot into windows it gets stuck at a black screen with a blinking underscore in the top left. I tried making a bootable Windows 7 dvd and it still doesn't solve the issue. F8 won't work only F2 and F12.
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Sep 8, 2009
I was installing Windows 7 onto my laptop (previously vista) and install seemed to run smoothly (went past asking about. PC name, network etc) but after it said it was preparing for first startup, nothing boots. After restarting.. besides the startup Acer screen, there is only a black screen with a blinking underscore at the top left. Whats happening :S?
I've tried F2 and running a setup but it just shows me some specs and such
Btw it has 2.0 Ghz + 2GB ram x__x
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Jul 15, 2012
Recently I got this problem on my Acer Aspire 5742G where my laptop gets stuck on black screen with a flashing underscore at the top left corner right after the Acer splash screen. I can get into Bios but I can't get into safe mode (normally I could press F8 to get into Advanced Boot Options but this no longer works).
The problem started when I decided to try out Windows 8 Preview a few days ago. I managed to set up dual boot windows 7 home premium/windows 8 preview and it worked fine. But I only gave 20GB to the windows 8 partition and I decided I needed more. I thought it's a simple matter to transfer space by shrinking the volume of the win7 partition, format the new unallocated space and extend the volume of the win8 partition. But after I did this, all the partitions apart from the recovery one became "simple partitions" instead of "primary partitions". I don't know the difference between the two terms and I didn't think it was a problem so I just turned off the laptop once I finished with it. The next time I turned it on the problem started. Could this have caused problems with the hard drive? It's the only thing I can think of that caused the problem.
Unfortunately I can't find my recovery disc either.
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Mar 4, 2011
About a month and a half a go my laptop was infected with 2 trojan viruses and ever since I haven't been able to start it up as it stays on a black screen with a blinking cursor after the toshiba splash screen. I am able to use my computer by booting with Hiren's boot cd and have since cleaned up my computer and gotten rid of any viruses..but have to continue booting via disc and it is getting sickening to do so.
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Nov 3, 2011
I built my own computer last year. The computer boots up just fine but before it bios screen comes up there is a blinking cursor that runs for almost 20 seconds and then bios kicks in and everything goes on normally form there.
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Aug 3, 2011
I just rebuilt my computer, but reused my old WD HDD, OS and all. It used to be hooked up to an AMD rig, but my new CPU is an i5-2500k and mobo is an MSI P67A-GD53 (B3). So when I hooked everything up and booted for the first time, the computer showed an error saying that the memory or cpu had been changed and that I needed to run the setup, which I did. That led me to the blinking cursor on a blank screen.It stayed that way for several hours before I decided to reboot. That time "A3" "99" "B4" flash on the screen, then it goes straight to the cursor. So I decided to give a new hard drive a try. I went out and got an SSD, hooked it up, same problemMy best guess right now is that the mobo was DOA. I'm still kinda new at this PC building thing
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Sep 19, 2012
I started IT for a company a couple weeks ago. I get this tower with no idea what OS is installed.Is there a file that I can load through Trinity Rescue Kit that will tell me what version of Windows is installed on the system?
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Jun 6, 2012
So I installed Windows 7 on my HD. The installation process went well. I chose my Username, password, etc, and then Windows prepares the Desktop for the first use, and then the PC automatically reboots.
The problem is that when the pc reboots after the final stage of the installation, Windows won't boot up and I get stuck with a blinking cursor. The only way I can boot up is when I turn on the PC and keep pressing F5 and then it takes me to a GRUB 0.4.4 Red Window like this one
When I chose the "alternative method", Windows boots with no problem. Is there a way to choose the alterative method as the default?
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Apr 30, 2011
I used to have win xp installed after which i decided to try out the win 7 so i installed it on another HDD. After thhe install everything worked fine so i decided i can format the drive on which xp was installed before. Althought win 7 did let me format it because it was a system drive ( the old xp drive) i used some other tools to get rid of it thinking i can just do a fixboot and restore win 7 boot files. Now that the old system partition is gone win 7 wont boot, all i get isa black screen and a blinking cursor. I tried to boot from the win 7 dvd and do startup repair but still get the same issue.
i really dont want to reformat win 7 and install it again?
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Jan 8, 2012
I use an Asus Bamboo U43 series running Genuine Windows 7 Home Premium x64. I was using it as usual and what I thought was a normal update occurred. When computer went into a typical update restart, upon reboot a black screen with a blinking cursor appeared (normal for start-up I know) but then the cursor dropped down a few lines as a cursor would do if you hit enter a few times, and that is it. The computer will not continue to the windows start-up screen. Pressing F8 or F9 during reboot does not respond. I can us ESC or F2 options and that is it.
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Mar 20, 2012
I'm having regarding my Dell with Windows 7 x64. Initially I got the message "Loading PBR for descriptor 2... Done". That's all it said, and did not continue to boot. I researched the error message and found many users with similar problems that solved it by booting the Windows 7 dvd and running bootrec.exe from the command prompt, so I attempted this. I tried bootrec with the /fixmbr, /fixboot, and /rebuildbcd options. After trying to fix my problem with bootrec, the "loading pbr" message no longer appears, all I get is a blank screen with a blinking cursor after the BIOS. I'm not sure what the problem or solution is at this point. I'm not sure if I've made things better or worse. I tried running chkdsk /r but it won't run, complaining that the disk is write protected. Edit: I just realized that System Recovery Options is showing "Operating system: Unknown on (Unknown) Local Disk"
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Nov 28, 2011
My PC takes approximately 90 seconds to boot! The HDD constantly reads/writes when windows has booted.My system:Win7x64, i7 920, gtx 560, 6 gig ram, Western digital 650 gig HDD, Asus p6 deluxe MB.
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Oct 13, 2012
I have a dell pc with windows 7. The computer loads the dell logo, the screen is black with the blinking line in the corner. I have tried all solutions that I have come across, the fixboot, replacing config files and last resort, I did a fresh install of windows. After the fresh install of windows, it worked for a few days and now it is doing it again. What is my next option?
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Jul 28, 2012
constant boot problems about 70% of the time, and Win 7 launches are dicey. Sometimes the computer freezes while showing the Desktop. If all drivers eventually load successfully, then the computer runs fine after that. The problem is just in getting it up and running initially.Note that I have turned off MS .NET Framework on someone's suggestion, but I continue to experience difficulty booting my computer successful. I have run Dell hardware tests and these have all been A-OK. I'm attaching the results from running the Seven Forums diagnostic tool (including minidump) from crash.
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Aug 9, 2012
so this is quite the long explanation. Today i upgraded to an i7 3770k with a asus P8Z77-VLK and a corsair H60 water block. I did not change to touch any other part of my computer. When I went to go boot BIOS posts but then as the windows 7 loading animation starts then about 2 seconds in i get an instant BSOD too fast to read and it restarts. I have tried startup repair, I have tried the windows repair disc, I tried the windows install DVD, I tried system restore(which failed error code 0x800700b7), I ran the memory diagnostic(no problems), I even went into the command prompt and did chkdsk.
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Jun 14, 2010
I tried Linux yesterday, and wrote over my previous Windows bootloader files with GRUB.
I later that day (as I could not boot into Windows 7), I deleted the Linux partitions with Windows 7 DVD. Now, after BIOS I just get a white blinking border on a black screen.
I tried
bootrec /fixmbr
Success
bootrec /fixboot
Success
bootrec /rebuildbdc
Success
bootrec /scanos (Total identified Windows-installs: 0)
I also tried the "automatic" systemrepair (1st choice in the DVD menu, with no luck)
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Nov 28, 2011
I have purchased an OEM pc yesterday and I installed windows 7 x64 on it. Everything went great with installation. No errors or anything. But when I restarted my computer, after the motherboard splash screen a black screen with a blinking cursor top left appears and windows doesn't boot. But sometimes, especially when I wait a few minutes to turn it on it boots normally till I shut it down. It is so random.
My specs are:
Motherboard: gigabyte 970a d-3
Memory: CORSAIR 4GB VENGEANCE DDR3 1600MHZ CL9(*2)
CPU: AMD phenom ii x6 1100t black edition 3 .3ghz
GPU: Sapphire hd 6870 1GHZ
PSU:700watt
OS: Windows 7 Ultimate x64
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Nov 20, 2012
This morning i turned on my PC, and for the first few minutes it worked fine, but then it turned horrible. Everything froze when i attempted to click it or even hover my cursor over it. I tried to open task manager to shut down Firefox, but it took around ~20 minutes for task manager to open. Once everything was closed, I scanned with MBAM Pro and nothing was found, so I read about this on other sites. They said to clean the registry with a program called WiseCleaner. It took me 15 minutes to get it, but when it finished scanning it found 853 problems in the registry. I also defragmented the registry. Also, whenever I try to boot into safe mode, my computer freezes at CLASSPNP.SYS. Not sure what to do now, as no improvement was made.
Specs: Windows 7 Home Premium SP1, Intel Core i7 Q740, 6 gigs of RAM, ATI Radeon 5850m
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Jun 18, 2012
I've been using Windows 7 since it was released and never had to reinstall so far.Unfortunately my System seems to have developed some issues which make work with the computer rather tedious. I have the impression that the issues are all related to a massive boot delay. Windows takes some 4-7 Minutes to boot. The masive delay starts after the logon screen. I have not been able to find out what is going on here and where the timeloss occurs. Once the machine has become usable - i observe some serious disc activity (led blinking constantly. This can go on for minutes.
I already tried to deactivate unnecessary startup programs, scan for malware. I frequently let ccleaner sweep the system.'d be very happy to see some opinions about this behaviour and perhaps find a way to resolve the issue, so I do not have to reinstall from scratch. I am aware that there is an inplace repair function in Windows 7 - this however only works with a system CD that contains Windows 7+sp1+all important updates. As I only have the original system CD I would like to avoid setting up a working boot cd.ps:[CODE]
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May 25, 2011
But, IE8 is giving me underscores on all file names when I download a file - how do I revert to spaces with no underscores?
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Apr 28, 2011
Recently did a new build, it's a couple months old now. Today I noticed that in between my MSI BIOS logo screen and the Win7 booting animation I get a flashing underscore on a black screen for maybe a second. I know this is a noob question but is this something normal I've just never noticed? The last time I saw something like this the system would only boot to a blinking underscore because the drive failed and I needed to replace it, so I'm a bit paranoid.
Mobo- MSI 890fx-GD70
CPU- Phenom II X4 970 (overclocked to 3.8 via multiplier only)
Ram- 8GB Crucial Ballistix ddr3 1333 (not overclocked)
HDD- Seagate 500GB Barracuda boot drive
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Mar 9, 2012
I removed the extra partition, repaired the boot record and MBR, and Windows 7 no longer boots. After I get through the bios screen, It just blinks this: "_" forever I've booted from the recovery disc, and tried startup repair, and it doesn't change a thing.I gave up ran out of ideas, and installed Fedora Linux as a dual boot system to get it at least up and running temporarily.
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Jul 22, 2012
I encountered this problem two days ago while using my computer (hp pavilion elite) and it sht off on it's own. I tried to restart and it won't boot windows. Just a black screen with a flashing cursor at the top. I searched all over these forums and haven't found a solution that works. So far I have done a restore point, tried to reinstall windows from a recovery disk, I've used command prompt to Fix the boot record. Diagnostics says my hard drive is fine and I can see the newly installed windows 7 on my hard drive via the recovery disk boot. But when I try to boot from hard drive it still goes black.
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Aug 10, 2011
I upgraded my pc yesterday and reinstalled Windows 7. Now on the starting Windows screen I have a little underscore blinking in the top left corner of the screen.
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Aug 4, 2011
A few days ago I made a clean wipe on my Toshiba laptop, and installed Windows 7 Home Premium x86 as my OS. After installing the OS on my laptop, I proceeded to let windows update check for automatic updates and install them. After installing some updates, I clicked to have my computer reboot. After rebooting it showed the Toshiba screen with the F2, F12 options but after that it goes straight to a black screen with a white underscore. I pressed the power button to turn off then back on my computer and proceeded to press first F2 but it went back to the black screen with a white underscore, then restarted again pressing F12 went to the black screen again, restarted one more time pressing F8 for safe mode but nothing works.
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Nov 22, 2011
I tried to shut down my Dell inspiron when it said it needed to update some things and not to turn it off. Without realizing it I pushed the off button and now, everytime I try to turn it on it just shows the Dell logo and then the windows logo and goes to q black screen with a flashing underscore in the top left
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Oct 21, 2012
Today I started up my pc and after the BIOS screen (the place where you can press f8-f11 for various options) it went to a black screen with a blinking underscore in the upper left corner and stayed there indefinitely. It did this even after reboot.
I tried using the diagnostic tool and everything it tested passed (including HDD). I did this test twice and the same results were produced.
I also googled for similar problems (one topic mentioned that the op disassembling his computer and physically tapping a chip on the motherboard caused it to work) but I have no experience with taking apart my computer and i do not want to break it accidentally. I did however chance upon a topic advising him to do a CMOS reset which apparently helped that op, so i looked through the various options on the BIOS page. There was one option (f10 I think) mentioning CMOS on its fourth sub-window, so i pressed the reset option but I'm mot entirely sure if I used the right function.
I uninstalled kaspersky pure and replaced kaspersky pure for kaspersky anti-virus yesterday, dont know if this was the cause. I am using windows 7 64 bit.
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