Solved Black screen after Windows 7 registry update - mobo or video

June 21, 2015 at 08:28:29
Specs: Windows 7 Home Premium, 2 GB
I have a custom built PC, Windows 7 Home Premium. 2 days ago it appears that Microsoft had some sort of registry "update" ( 5167 tasks, I had the some one on my laptop which strangely lead to me having to re-enter my registration code and creating a black custom background).

During or after the update my screen froze, colorful horizontal lines, cursor frozen. I switched off the machine, re-booted several times. All I get now is a black screen, power and fans are running, HD runs normal from what I can tell (I unhooked it and hooked it to my laptop, at least I still have access to my files), start-up beep is there. 2 other things I noticed: the DVD tray will open and close immediately, the monitor works with my laptop but with the PC I have no signal and the monitor seems to go idle.

I removed all hardware from the motherboard but still can't identify the problem. If it is a hardware issue my guess is that it is either the motherboard or the video card. If not then the registry update must have disabled an sort of start-up. I unhooked my start-up HD, re-booted to see if anything happens, same black screen.

Any ideas or suggestions on this issue?


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✔ Best Answer
June 26, 2015 at 06:16:23
Hi, I had 2 x 2GB RAM sticks in 2 slots and we tested every stick and every slot. Result was that 1 stick is not longer working and 1 slot appeasr to have gone bad. I now have slot 4 filled with 1 2 GB stick and 2 slots filled with 1 GB each.

RE the software message - as stated I had the same message on my laptop which I have scanned, no issues. The only reasonable explanation I have is that it had to do with the optinal Windows 10 uprade icon I now have on the bottom right corner.



#1
June 21, 2015 at 09:01:25
Microsoft doesn't push registry updates & you should never have to "re-enter your registration code". Please explain what was downloaded & how. It sounds more like you picked up a virus or malware.

"I removed all hardware from the motherboard but still can't identify the problem"

More explanation is needed. Start by listing your system specs. Does your board have onboard graphics? If it does, you should temporarily connect the monitor cable to the onboard port. Remove All cards, disconnect ALL drives, remove all but one stick of RAM & make sure it's fully seated. Disconnect ALL external devices except for the monitor & keyboard. It would be best if the keyboard is wired, not wireless, & PS/2 is preferable to USB when troubleshooting. Unplug the power cord & use the Clear CMOS jumper to reset the BIOS, then plug in the power & attempt to boot the board. If it works, immediately re-configure the BIOS settings use the keyboard.


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#2
June 21, 2015 at 09:13:49
Can you get into safe-mode (press F8 after the initial splash screen)?

Equally if you can get to that safe-mode menu - there will be other options there too - try Last Known Good Config?

Incidentally I'm suspicious about the M$ Registry update.. I'm wondering if you go hit by something not from M$-land?

On the laptop I'd be seriously inclined to scan that system - fully; both from within windows and without (windows not booted up). More of a safety aspect but better to be safe (now) than sorrier (later)...

Download and burn to a DVD the Kaspersky Rescue Disk ISO. Boot with that DVD. It will load itself into RAM only; then go online to update itself. Having done so it will scan the entire hard drive and deal with anything nasty it finds. There are assorted pests that hide within windows systems and avoid detection by most utilities running within windows. Kaspersky not running within windows (it's a Linux based disk) is thus able to find them and deal with them.

http://support.kaspersky.com/viruse...

http://support.kaspersky.co.uk/4162

http://support.kaspersky.co.uk/8092

and this is a very complete guide re' using the Kaspersky Rescue Disk:

http://tinyurl.com/373ojxb

Having done the Kaspersky routine I'd then download and run - in this order (as per Derek's advice):

adwcleaner

http://www.bleepingcomputer.com/dow...

Junkware Removal Tool (JRT)

http://www.bleepingcomputer.com/dow...

JRT installs to the desktop; from where you run it. It opens into a small dos style window; follow the instructions therein. It will reboot the system asa part of its process.

Malwarebytes:

http://filehippo.com/download_malwa...

Install each utility using the "manual/custom" option; do NOT use the automatic option. When you use custom you can uncheck all those little boxes "so helpfully pre-checked" for your "convenience. Those (pre-checked) little boxes allow a whole slew of "stuff" to be included in the installation; stuff you don't want or need, and which often is PAI to get rid of.

I'd also ensure (even for the laptop) that "all" your personal files on that system are also safely copied elsewhere - typically DVD but an external hard drive too is nice(r).

You might also run the Kaspersky Rescue Disk on the PC as it will clean that out to some degree too. Then see if it will boot at all into safe-mode or Last Known Good Config (if it won't as earlier above)?

On both systems, retain any logs generated - incase of further input/need anon...

On the PC - can you get into bios settings; and if so are they as they "ought to be". Is the hard drive detected/running (can you hear it)?

Is the video onboard adapter enabled in the bios; as if you have removed the add-in card then the system may not have reset to to the onboard adapter?

edited by trvlr to correct typos.

message edited by trvlr


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#3
June 21, 2015 at 10:43:06
Please copy/paste the malware program logs on here if any of them find anything.

Always pop back and let us know the outcome - thanks


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Related Solutions

#4
June 21, 2015 at 11:58:51
Thank you all for your suggestions! I have a on-board graphics card, I already disconnected the monitor from the card, tested the monitor with my platop, no issues. I do not have access to any logs. When I have the black screen there is nothing to see, no visuals, nothing.

My next step would be to perhaps install a new graphics card to see if anything is visible.


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#5
June 21, 2015 at 12:55:35
Did ADWCleaner, Junkware Removal Tool and MalwareBytes find nothing or have you decided to put the malware idea on the back burner? That message from MS about the registry sounds highly suspicious. I've been on this forum for about 16 years and never heard of anything genuine that bears any resemblance to it. It sounds like a scam.

Always pop back and let us know the outcome - thanks

message edited by Derek


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#6
June 21, 2015 at 13:28:18
When the PC boots up - is there any evidence at all of splash screen (if there was one previously); or even the press "whatever key" to access setup (i.e BIOS)? And if so - can you access the BIOS settings?

If you boot the PC with a Linux disk (and the Kaspersky disk is in effect one) it will test the hardware pretty well; and if you do get a display via that disk boot up, then the problem is not likely hardware related?

And as it boots with the Linux disk, watch to see if there is a message/display to access the BIOS? If there is then try accessing BIOS and then check "all" settings.


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#7
June 21, 2015 at 21:04:04
If you made a Windows 7 Repair Disk you can try booting to that, if you can boot to the Repair Disk then you can run a System Restore from the Repair Disk and use a restore point on your hard drive. This can roll back any registry changes to before the date you installed the supposedly Microsoft Registry Change. Note that all Microsoft changes to your system would come in the form of Windows Update only. If you did not make the Repair Disk yet, you can make one from any working Windows 7 machine as long as both machines are either 32but or both 64bit and use that. This will be the fastest way to get your system to boot up. DO NOT Think that if it works you are done, you still have that download you did to take care of so go back to the prior suggestions and run Malwarebytes and probably a few more of the first suggestions and then post the logs as you get them for analysis to make sure that you are clean. Other directions will then come as needed to help you.

You have to be a little bit crazy to keep you from going insane.


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#8
June 21, 2015 at 21:32:21
If you suspect the video system and you have a desktop, the easiest method to test the on-board video card is to just jam in a new video card. According to NewEgg, you're looking at sub-$30 for a test video card, and it'll provide equivalent performance to on-board video.

If this custom box is fairly new and it was shipped to you, the RAM might have gotten loose. Try reseating it. If the PC's still in the warranty period, you should probably call the builders.

That said, the black background sounds like whatever they did caused Windows to loose validation, but I'd need to know what happened and exactly what "registration code" you had to provide. If it was just your Windows key, then the builders probably just forgot to enter it when they built the box. Since Windows will run normally without activation for 30 days, it could have been missed during the QC phase. If the "code" was a credit / debit card, call the phone number on the card and report a possible breach. If it was personal information such as an SSN, you should invoke a credit freeze immediately.

How To Ask Questions The Smart Way

message edited by Razor2.3


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#9
June 22, 2015 at 06:14:50
could be a fake "key" the builders entered.
Nevertheless is should not affect the hardware in this way.

Reset the BIOS (jumper or remove the coin battery for a minute)

Is the video on-board (connector on the motherboard) or an PCI extension board?


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#10
June 22, 2015 at 06:33:40
Hi, here an update and response to the suggestions:

- The disk drive will not take a disc, it opens and closes immediately
- I used to have a splash screen, as stated there is nothing. The monitor (when running properly the power botton on the monitor is blue (Acer monitor), when on stand-by yellow. The screen will not show anything, it says briefly no signal and stays yellow
- I removed th battery for 4 h, reinserted it, no change
- The video is on-board, not a PCI extension
- Windows update - I am really too much of a novice to explain this. I did have the same on my laptop also (Win 7 Premium Home), it works fine. I ran Malwarebytes and Avast on my laptop, no issues, it also works fine.
- The PC is not new, > 5 years old


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#11
June 22, 2015 at 07:05:47
Are you using the same video cable when you try it on the laptop? If not then it might be the video cable.
Have you tried to access BIOS set up? If you can get into it then it will prove some hardware at least is good. Depending on your motherboard, the access to the BIOS set up is by tapping one key at boot up, often the Delete key but it can be an F (F1, F2, etc) key and sometimes others, see the manual for details.
Did you try a bootable CD/DVD? Anything from a Windows install disk (do not reinstall at this stage), to a Windows Repair Disk (you can try System Restore if they come onscreen), to Memtest or a rescue disk. If any of them work then your hardware is good.
It might be coincidence and it was a hardware failure from a power supply (probable) to motherboard (possible), to a total memory failure (unlikely), but we keep coming back to the 'update' you got. It might be more helpful if you were able to give us some more details on that.

You have to be a little bit crazy to keep you from going insane.


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#12
June 25, 2015 at 20:18:14
Hello everyone,

here the hopefully final update on the issue. I brought my desktop to a computer shop near by, after about 30 minutes of testing it turns out that the issue was with a burnt out RAM stick and it looks like the No.1 memory slot has burnt out, it does not work anymore. Got some used RAM from the shop, everything works again.

Thanks for all your suggestions and posts, much appreciated!


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#13
June 26, 2015 at 00:05:27
Thank you for the update etc. and good to hear it's all working again.

back to the original software message etc. As per others here, I'm still very suspicious of it, and its pedigree (its origins...!). I would still run the scans (if you haven't already); and also attend to updates re' the Windows system that come from M$ only, ignoring those that come from othersprofessing/claiming to be acting on behalf of M$. Similarly for drivers/updates etc. for other software installed; accept etc. only those from the genuine manufacturer/hardware sites for that software.

Back to a burned out RAM stick... Are you saying that socket one now doesn't work, has no RAM stick installed there; and system still boots etc. OK?


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#14
June 26, 2015 at 04:24:53
trvir@ Since this is a custom built PC then it is very possible that there are 4 RAM slots and with reasonable size RAM, only 2 good slots are needed. Even if it is a 2 slot MB, with a larger RAM stick the system will still work though it will slightly suffer the loss of dual channel mode, but it will still work reasonably for light use (slow for gaming, video editing or number crunching).

You have to be a little bit crazy to keep you from going insane.


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#15
June 26, 2015 at 06:16:23
✔ Best Answer
Hi, I had 2 x 2GB RAM sticks in 2 slots and we tested every stick and every slot. Result was that 1 stick is not longer working and 1 slot appeasr to have gone bad. I now have slot 4 filled with 1 2 GB stick and 2 slots filled with 1 GB each.

RE the software message - as stated I had the same message on my laptop which I have scanned, no issues. The only reasonable explanation I have is that it had to do with the optinal Windows 10 uprade icon I now have on the bottom right corner.


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#16
June 26, 2015 at 06:21:01
Regarding the registry update the OP is talking of I often see it with Windows 7 after an update. Usually after a large amount of updates when the PC reboots, during the boot process I get the message saying "Windows is updating the registry xxxx of xxxx".

I only ever retrieve updates via Windows update in control panel.

Edit: I have never been asked to reenter registration key though.

message edited by btk1w1


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#17
June 26, 2015 at 07:01:53
@fingers... Tak for the info. Been more than a little while since I built a desktop of any significance.

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#18
June 26, 2015 at 11:51:36
Personally I would prefer to check the manual for the MB and locate which two good slots are on the same channel (for dual channel mode) and stick in a matching pair of the largest memory that would work properly, probably two 8GB sticks or at least two 4GB sticks for the best performance under these conditions. If performance is important then I would get the fastest speed memory supported with the lowest Latency, though they would of course cost you more than the basic, and especially more than the used memory you purchased.
Well, great to hear that you are up and running again, good luck.

@Trvir... Over the years I have learned a lot here, research a lot more before a new generation build, and I feel that spreading the education around is important, so I rarely give very short answers. Like above, the final decision is his/hers, but if he/she later decides that he/she would like more performance and has a bit of cash, he/she might remember or come back looking for that answer again.

You have to be a little bit crazy to keep you from going insane.


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