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PC blank screen on start up

Posted on 2013-11-14
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Last Modified: 2013-12-22
When my PC starts up sometimes it takes ages and does this flashing a few times before starting up and can take a whole 5 minutes.  This PC is less than 6 months old and is windows 7.  I do not know what is causing it only that it used to start up instantly.  Please can I get some assistance.
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Question by:fastrack23
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by:FutureTechSysDOTcom
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by:PyanfarChanur
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A little more information might help.  If you can provide some of the following:

- is this a desktop or laptop?  If you have maker and model # that's even better
- what do you mean by 'flashing'?  I can think of about a half-dozen things that could mean so I'd like to narrow it down and not type you a ton of words. :)  For instance, is the monitor flashing on and off, is the screen flickering something that goes by so fast you can't see it, do you think the machine is rebooting repeatedly, etc.?

I'll be glad to help with just a bit more info.  Hopefully it's not a hardware problem!
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by:sentner
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When you say it takes 5 minutes and does a "flashing", do you mean prior to getting to the Windows 7 loading screen, or after?  If it's before, it may be a problem with your BIOS settings or perhaps a hardware problem such as a failing hard drive or memory.  If it's while loading Windows, it can be hard drive fragmentation, drivers or programs that are slow to load, a virus or spyware, or it may be trying and failing to apply a system update on each boot.  

If you can give more details of what it's doing while it's booting, we might be able to help more.
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by:tmoore1962
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run a malware / virus scan, if clean run diskclean up next run a windows check disk on system, check video driver for update or reinstall good disk clean up wise apps you could also run their registry cleaner , be sure to back it up before actually cleaning registry.
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by:tmoore1962
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Also if system on domain check networking and see if its listing the domain network as a public network.  If so then remove from domain reboot, run netsh int ipv4 reset and netsh winsock reset catalog reboot, rename pc reboot and rejoin to the domain
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by:fastrack23
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I say flashing as it seems to attempt to load the main screen several times but remains blank, I have run malware bytes program that found a few things and deleted it.  Is there anyone that could look at my drive somehow and give me instructions to follow so they could do that?  It is a lenovo i5
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by:PyanfarChanur
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fastrack23, it sounds like there may be a low-lying problem in your startup and with luck that problem could be repaired.  I do not know if you are running Windows 7 or Windows 8, so I'm going to give you a few things to consider.

- I wouldn't think you'd need to format and reinstall your machine, but before you go any further I would suggest making a backup of your system.
- For either Windows 7 or Windows 8, you can try to do some very simple checks by booting the machine into recovery mode.  That's not as complicated as it sounds.  I like the way Sevenforums.com (and eightforums.com) walks you through it, so here's a link for you:
http://www.sevenforums.com/tutorials/681-startup-repair.html  <--Windows 7
http://www.eightforums.com/tutorials/2843-automatic-repair-run-windows-8-a.html <-- Windows 8

Windows 8 uses friendlier language, but the gist of it is you want to "Check for Problems that prevent Windows from starting." (in Win 7, you'll see at that link that "Startup repair" is the option).
- If you are running Windows 8, you can also "Refresh" your PC, rolling it back to a near-new state:
http://www.eightforums.com/tutorials/2293-refresh-windows-8-a.html

I can't stress enough how important it is to back up your computer so that you don't lose anything.  I'll also give you a link to a good description of that here:

http://www.sevenforums.com/tutorials/663-backup-complete-computer-create-image-backup.html

If you have any more questions, do feel free to ask and I'll do my best to reply as quickly as possible.  Good luck to you!
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by:fastrack23
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I've requested that this question be deleted for the following reason:

fixed
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by:sentner
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What was the solution?
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fastrack23 earned 0 total points
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I discovered it was the monitor and not the PC and it needed a new monitor.  The monitor was coming on after a while but this was making me believe it was flashing and it was the PC on start up when it was not.
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