Garbled Screen - ASCII - DURING POST
Nov 12, 2009
I recently attempted an install of Windows 7 onto a friends PC. The specs are listed below. Here is a link to a screenshot of the problem www.ronnarozny.com.
This occurs after a Windows 7 install. The system boots to the Windows 7 setup, where personal options are selected. After this, a reboot will begin the POST, and prior to completion, this screen appears. I do not believe the POST has finished, and I do not think it is handing boot duties to the OS.
What I have attempted so far is:
Memtest - checked out ok.
Replaced CORSAIR mem with other sticks.
Reformat from command prompt on boot disk.
Removal of all hardware, including video card.
I am completely stumped on this issue, and any help would be appreciated.
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Apr 29, 2009
So check out what my Dell Latitude D830 (Nvidia Quadro NVS 135M chipset) did the other day...
Any ideas?
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Nov 5, 2009
Running Windows 7 Ultimate. I wanted to connect my laptop to an external monitor so I pressed "Windows key + X", then clicked "connect display", then "extend."
On most computers, doing this will allow you to output the display to another monitor.
When I did it on my laptop, the screen started flickering and became garbled. It's too garbled to see, and I can't find the mouse and undo what I've done. I tried restarting but it's still like this.
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Jan 25, 2013
I tried to do a routine (once a year) chkdsk via the command prompt Code: > chkdsk /r
> shutdown /r /f /t 1 . And upon the reboot, all I get is a black screen, no cursor, with ~4 rows of rainbow, garbled pixels at the very top of the monitor (certain pixels occasionally change colours). This occurs before the windows splash screen. I have left the computer as is, hoping it will eventually boot on its own with no luck. This was just a routine check. Some more information, I dual-boot with Ubuntu. I can mount and access the windows partition from Ubuntu, and I even ran ntfsfix in Ubuntu (which has some analogous functionality to chkdsk), but it didn't notice any problems.
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Dec 22, 2012
Just purchased 2 new (refurb) PC's for my wife and I. It's all I could find with Windows 7 still available. They are both HP Pavilion p7-1233w 64 bit Desktops running Win 7 Home Premium SP1.During Windows setup of PC #1, it asked for a restart. When the PC powered back up, it had a black screen from the start (before the Post screen). I power cycled it several times with no luck. Even switched monitors and video cables. The next morning it started normally with perfect video.I assumed the Refurb PC had a problem and set it aside for return.Been setting up PC #2 for a few days now with lots of restarts. All was well, until I did a restart just now. There was the identical problem. Power cycled the unit twice, and still had the black screen.Then I unplugged the PC, and pressed the power button to discharge the capacitors (fans ran for a few seconds). When I returned power and started the PC again, it functioned normally. I've done 10 quick restarts since to try and replicate the problem, but it only happened that once.
I love these PC's, and I love Win 7, so I hate to give them up. But I don't want the video freezing up on me every time I do a restart. I assume now, that PC #1 is not necessarily defective.Since this is occurring before the post screen, I wasn't sure if it could be windows related.
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Feb 10, 2013
Usually POST screen would show up first with a laptop company logo, but now Windows 7 startup appears first instead. Then, the Windows 7 startup screen freezes immediately. What's the problem? Motherboard or corrupted BIOS?
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Sep 8, 2011
For starters this is not my computer, I'm attempting to fix a friend of mines laptop. I have no idea what he was doing prior to this meltdown but the computer will no longer boot so far as to get to the windows login screen. I have tried booting in safe mode on all different settings but after the bios readout it just goes to a black screen with the pointer (same as reg boot).
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Jun 26, 2012
When I start up my pc I my screen stops at the POST screen where down to the bottom it says AHCI Port 0 error...I never had that error before as normally I won't even see the POST screen.
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Jun 30, 2012
My computer was working fine 15 hours ago, playing games and loading webpages and all that. I turned it off for the night and when I turned it back on this morning it booted properly, as per usual. So then I logged in, the screen turned black, my cursor appeared and nothing else happened. I've been trying to fix this problem all day and if I leave it for long enough it does log in properly, but I was wondering if maybe one of the start-up systems isn't working right or whether I just need to do a disc cleanup. Running Windows 7 Home Premium 32bit, and the average wait time for it to load (when it does load, which is occasional) is about half an hour. Also running Windows 7 on a Mac, because my school gave it to me for phr33 at the end of their Mac phase.
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Oct 12, 2010
I have built my computer about 2 months ago now, and had nothing but issues with it, display drivers stopped responding, alot of BSOD (bccode 1a and 50), black screens, lockups and so forth, i have FINALLY read enough forums over this 2 month period to solve majority of problems accept one, Computer runs fine, but every morning on cold bootup it'll start to load POST and then go to a black screen and just stay there unless i reboot the computer and then it'll bootup fine. I will turn off the computer after that and go to work for about 8-10hours come home and turn it on all fine, untill the next day. I have tried new ram, fail safe settings in bios, updated bios to the lastest, bought a new power supply, tried reconnecting everything, unpluged storage harddrive. Only thing i could think of causing the problem is my video card drivers, because as soon as i install the drivers i get "drivers have stopped responding but have recovered" screen would lock up freeze/artifacts and then come back, until i changed my idle clocked from 157/300 to 400/900 and it sorted out that problem, but those settings dont kick in until i reach into desktop, could it be trying to load the ati drivers during post and black screening?
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Jul 10, 2010
It started yesterday when my wife and I noticed the computer hanging a bit more than normal - even when doing basic things, like clicking "login" to check our email. But, it would always come back and really wasn't all that frequent. This morning I tried to start it up and it got stuck on a black screen after the motherboard POST image. I was able to get into BIOS and boot from the windows CD. A system restore fixed it. I'm just wondering what you guys think was likely to have caused it. Is it likely that my boot files got corrupted somehow? I ran a diagnostic and from Seagate and it says that my hard drive is fine - but I'm not sure if that's just because I recently restored Windows.I did recently install a big name game - but it ran fine for three days before this happened. The system restore point I had was from when I installed it, so it's now gone.What do you guys think could have caused it? I'm just a little concerned that restoring only patched over a problem that will crop up again - or, that I should be afraid to install that game again.PS: System Specs: Windows 7 Home Premium 64-bit, 3.0GHz E8400 Intel CPU, 500GB Seagate SATA HDD, 4GB Crucial 800MHz RAM (x2 2GB), ASUS P5Q Pro Turbo LGA 775 Intel P45 ATX Intel Motherboard. The game that was installed was Vanguard: Saga of Heroes.
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Oct 23, 2012
[code] I have Windows 7 64 bit in HDD1 and OS X Lion in HDD 2 that I installed using Hackintosh distro. I press F8 key on POST screen which gives boot drive selection menu from where I select the HDD to boot from.The system was running flawless on both operating systems until recently. The problems are listed below:
- Almost always it takes unusually long for POST screen to appear (around 60 to 90 seconds) whereas during good condition it used to appear within 5 to 10 seconds of power on
- Sometimes the system doesn't receive display signal
- If I take out power cables from all SATA drives but one, then the POST screen usually appears normally for sometime.
- At one time I removed ALL SATA drives, i.e. both HDDs and DVD then turned on, it turned on promptly without delay.
Then I connected Optical drive and turned on, it turned on properly. Then connected the HDDs one by one, and it still turned on without delay. But this lasted only for 2 days after which the same problem, i.e, either POST screen appears after painfully long time or doesn't appear at all.Before this motherboard, I had Intel DG43NB and had both Os X and Win 7 and experienced exactly the same problem and my hardware guy told me that my motherboard had gone down so I replaced with this ASUS one. Again the same problem with this board
- Where is the problem?
- Could the problem possibly be in the motherboard? I think it's unlikely because once the system starts it works flawlessly, i.e. no errors, no crashes, nothing.
- Could it be the power supply? Since it seems to work better with less load, i.e. some drives disconnected.
- Could it be the GPU?
- What's the best way to diagnose?
- Does the problem have anything to do with my frequently switching boot drive from POST startup menu?
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Dec 13, 2009
I was on my Compaq V2310US laptop and noticed it was running slow, so I decided to run chkdsk just for the heck of it. It appeared to freeze at around 33%(but now I dont think it did), so I turned it off. I restarted it, noticed that it just stayed at 33% for awhile and left it this time. Now when I start windows 7 ultimate, it says "starting windows" then boots to a blank screen. No welcome screen or anything.
The mouse pointer is there and my wlan button and capslock work, but the mute sound button doesnt respond. If I boot in safe mode, CLASSPNP.SYS is the last file to load and I get the same black screen problem. Im wondering why theres no AGP440.SYS.
I have the ATI M200 chipset and when I updated it awhile back, my PC did the same thing, however I was able to go into safemode and uninstall it. I got another option to update it a week later(which made windows aero work) saying the driver was for windows 7 and it worked. My advanced options are limited to the 3 safe modes and normal mode. Startup repair didnt do anything.
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Feb 17, 2012
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Dec 12, 2009
I was on my Compaq V2310US laptop and noticed it was running slow, so I decided to run chkdsk just for the heck of it. It appeared to freeze at around 33%(but now I dont think it did), so I turned it off. I restarted it, noticed that it just stayed at 33% for awhile and left it this time. Now when I start windows 7 ultimate, it says "starting windows" then boots to a blank screen. No welcome screen or anything.
The mouse pointer is there and my wlan button and capslock work, but the mute sound button doesnt respond. If I boot in safe mode, CLASSPNP.SYS is the last file to load and I get the same black screen problem. Im wondering why theres no AGP440.SYS. I have the ATI M200 chipset and when I updated it awhile back, my PC did the same thing, however I was able to go into safemode and uninstall it.
I got another option to update it a week later(which made windows aero work) saying the driver was for windows 7 and it worked. My advanced options are limited to the 3 safe modes and normal mode. Startup repair didnt do anything. Thanks for any help
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Jul 9, 2011
I'm having the most insane issue with sounds in Windows 7. All of a sudden out of the blue it seemed like my headphones started dropping half the channels. I can hear mostly high pitched sounds but bass and especially voices are very quiet, laggy and distorted.
What's killing me is I can't find out why. I've tried different headphones, but every pair does the same thing. I've used different audio jacks (reconfigured in registry) no difference. I thought the onboard Realtek card might have had it so I bought a new Creative sound card. Exactly the same thing.
I've installed and reinstalled new drivers, codecs and anything else I can think of. I even booted into my Vista partition and the sound there is screwed too now. Have I just killed some part of the motherboard somehow?
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Jun 12, 2011
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The problem is minor and it's just a bit of an annoyance I've been dealing with from time to time.[CODE]Basically, If I were to I put my computer to sleep(using the sleep function, not hibernate) and try to wake it up within a few seconds, the computer would go into an automatic reboot loop that would continue to boot, shut down, boot, shut down until I turn off the PSU completely. I'm trying to figure out which component might be causing this problem, if any. I've updated my bios, drivers, and ran memtest but nothing seemed out of the ordinary and it didn't fix the problem.
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Nov 26, 2011
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Nov 9, 2009
I had no problems with the first two computers that I upgraded from Vista to Windows 7, both were 64bit systems. I'm having post upgrade problems from vista to windows 7 with my 32 bit machine (Sony Vaio VGN-NR430E). THe machine did fine with the compability check for Windows 7.
Problems:
1) Some icons on the desktop are not appearing. Instead of the icon, I just have a white icon in it's place.
2) Taskbar icons are either white or blank. If I click on the white or blank icon the application will run, If I hover over the blank or white icon it tells me what application it is.
3) Control panel icons are not present.
4) Start menu icons and folders are white. If I click on them, it just hangs like it is trying to do something and will remain like that until explorer crashes.
Ideas that I tried but did not work:
1) Tried rerunning the Windows 7 upgrade. But when it gets to the compability check, the check just keeps running. eventually I then must cancel out of the upgrade
2) Tried a chkdsk at bootup. No errors, but it did not fix my problem.
3) Tried rebuilding the iconcache. Did not work
4) Tried some other type of scan (sfc /scannow)that was started from the command prompt. it did not work.
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