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The PC doesn't launch


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Hey, I have a problem with my PC. I wanted to launch it and initially everything was good but after a screen with options to launch BIOS etc. instead of windows launching screen there was a "No signal" notification and it stalled. PC seemed to be working but it didn't launch. 

One time it said that system windows hasn't loaded properly and I could reboot the pc or tried some other options there were. I used the startup repair option and had to use my password but it didn't work. 

I have a pendrive with Windows installer. Should I try to repair the system with the pendrive? 

Do You have any ideas what happened? I have to add that yesterday there were some problems with electricity and it was cut off a few times while the pc was working. Could this be a source of the problem? What should I do? 

Edited by Manaphy0220
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A power outage could definitely be the cause as it may have corrupted data on the drive, or even damaged any number of hardware components in the system itself.

At this point you can try doing a repair using your USB drive to see if Windows will start, but if any of the hardware components were damaged by the power issue then it may not work.

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1 hour ago, exile360 said:

A power outage could definitely be the cause as it may have corrupted data on the drive, or even damaged any number of hardware components in the system itself.

At this point you can try doing a repair using your USB drive to see if Windows will start, but if any of the hardware components were damaged by the power issue then it may not work.

So what should I do? Use pendrive and option to repair/install windows with keeping files? 

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Hello @Manaphy0220

What sort & configuration of hardware is this system?  I mean is it a desktop or a mini-tower with a separate display monitor ?

If it has a display hardware  (  and since you make mention of electric power outage ), I would double & triple check the seating & connection of the monitor's power & display connections.

I would suggest powering off the whole system.  Make sure to physically disconnect any printer or other external attached device.

Wait for about a minute or two.   Then power ON  and watch for what happens after.

PS  The "No Signal" typically is like the monitor-display indicating it has "no input ". 

Edited by Maurice Naggar
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I did disconnected the power cable for ~2min and then launched it. It worked! The PC is working right now. I started sfc /scannow scan and will edit this post and paste results. Should I do something more? Is the system restore to the previous point thing recommended now or should I just leave it be?

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Yep, hopefully everything is OK, but if you notice any issues, errors, or strange behavior, you can then try a System Restore to hopefully set it right.

Hopefully there was no internal damage to any of the system's components, but only time (and stability) will tell.

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6 hours ago, Manaphy0220 said:

I have to add that yesterday there were some problems with electricity and it was cut off a few times while the pc was working.

Was the computer sleeping when the power outages occurred?

Do you have fast start enabled?

I suggest turning off fast startup in Windows. Then restart.

https://www.tenforums.com/tutorials/4189-turn-off-fast-startup-windows-10-a.html

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Posted (edited)

The pc was worki g when the outages occured. I didn't expext it to happen more than once or twice. The fast startup is turned off. 

The scan haven't found any problems (sfc /scannow)

I also had a problem with Valorant game after the outtages (The game is not available for your operating system). Reinstallation helped. I hope the pc will be fine now. 

So I shouldn't do the restore if there will be no problems?

Edited by Manaphy0220
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Chkdsk says that there is no need to check but I can do it anyway. 

The restoration point is from 02.06.2021

So if chkdsk doesn't find anything or doesn't repair it then there is no need for restoration point? Or should I do it anyway?

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The fact that Valorant had issues after the outage indicates there likely was at least some registry corruption when the event occurred, unless Valorant was running when the outage occurred and it simply corrupted one or more of its own config files or settings by failing to complete a task when the outage happened.

If System Restore is set to default you should have a restore point as recent as the last time you installed a program or updated Windows, but as Maurice indicates above you don't need to do it if the system is working properly.  I'd personally be a bit apprehensive about the fact that you already had to reinstall one application (Valorant) due to an issue though, as that indicates that at least some kind of corruption or write failure did occur.

Also keep in mind that SFC does not check registry hives, and registry corruption was my primary concern (and also one thing which should be corrected by a System Restore), so just keep that in mind if you do encounter further issues.

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Posted (edited)
23 minutes ago, Maurice Naggar said:

Whether you do SR is all up to you.   If you do do that, I would only try it just from Safe mode Windows. 

If it were myself, since Chkdsk & sfc report no issues, I would not.

You mean that I should launch the pc in the safe mode and then do the restoration if I want to do that? Why is that? And how can I launch the safe mode?

I think I will do it because I wanted to watch a stream while playing an sometimes the stream was like in slow motion. The game works fine tho

Edited by Manaphy0220
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Over many years of using Windows, I have found & seen that attempting to run System Restore from normal mode can fail.

That is why Windows Safe mode  ( or else from a Command prompt) has the better odds of success.

For a How To to get to Safe mode   see  https://www.tenforums.com/tutorials/2304-boot-into-safe-mode-windows-10-a.html

 

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1 minute ago, Maurice Naggar said:

Over many years of using Windows, I have found & seen that attempting to run System Restore from normal mode can fail.

I gave up on Windows system restore years ago. MS has a habit of turning it off especially if there is not enough free space on the drive.

I only use and recommend system imaging to an external drive these days.

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4 minutes ago, Porthos said:

I only use and recommend system imaging to an external drive these days.

That's definitely ideal if a recent system image is available.  The ultimate failsafe solution to prevent loss of data.

I've had good luck with System Restore personally, however in a situation like this I would likely run System Restore from the repair options by booting from the USB if it came to that, but as the others mentioned, SR probably isn't necessary.  Just keep an eye on things and if you do encounter issues you can always roll back to a restore point as long as you have at least one restore point from a time prior to the power failure.  Also keep in mind that if you do run System Restore, that you should check the box to show more restore points in the System Restore window so that you can see all of the available restore points on the system, and then click the button to scan for affected programs that way you'll have an idea of which applications, if any, you might need to repair/reinstall after System Restore is complete.

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Posted (edited)

I'll see if this slow-motion on streams will continue without Valorant running. If this continues then I'll try that restoration. How does it sound? 

How do I do the restoration launch from the pendrive? The repair system option?

Edit: How does thst repair install works? Should I do it?

Edited by Manaphy0220
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5 minutes ago, Manaphy0220 said:

I'll see if this slow-motion on streams will continue without Valorant running.

What are the specs of this computer. CPU,RAM Video card, SSD?

What internet speed do you pay for.

Are you wired or wireless to the internet?

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System Restore from the USB is available from the repair options.  Instructions on doing so can be found in the second half of this post.

A repair install of Windows is a far more drastic measure.  That's what you would do if the registry were corrupt and System Restore failed, as a fresh registry would be needed for the system to function properly (this also means that after a repair install, you'd likely need to reinstall most of your applications).  A repair install allows you to keep your files, but for programs to work they need to be reinstalled since it results in a fresh/default registry and system files after doing so.

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1 minute ago, exile360 said:

(this also means that after a repair install, you'd likely need to reinstall most of your applications)

Not from the ISO or even the media creation tool ran within a running install.

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19 minutes ago, Porthos said:

Not from the ISO or even the media creation tool ran within a running install.

How so?  It won't have any of the settings/registry entries from the installed applications, right?  Unless there's something new in Windows 10's repair install that I'm unaware of.  If there is, that's awesome, but then it would have needed to have been created pretty recently as well, otherwise it would still be missing entries for any recently installed applications, right?  Basically the same issue as System Restore.

I'm not super familiar with the changes in 10 vs 7 for repair installs, so you'll have to excuse my lack of familiarity with the subject.

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1 hour ago, Porthos said:

What are the specs of this computer. CPU,RAM Video card, SSD?

What internet speed do you pay for.

Are you wired or wireless to the internet?

I can give you the specs but I don't think it's necessary. I've been using this PC for many years now and there weren't problems like that. I'm not sure if I ever tried to watch a stream with Valorant running but if there are problems with streams when other games are launched then something is wrong.  Then I should try that restoration from the pendrive. Do I get this right?

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