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Windows 7: Screen goes blank for a few seconds during boot

11 Jul 2016   #1
557953

Windows 7 Ultimate x64
 
 
Screen goes blank for a few seconds during boot

Hi

So I've been a Seven use for a few years now I regularly reformat my system, not always needed but I like a fresh start every 2 or 3 months, anyway since my last format (I tried Win 10, Nope) I've noticed when I'm starting or rebooting my PC I get my MoBo info and then the Windows Logo comes and goes, then it just goes off for a few seconds I say the screen goes blank, this isn't totally true, it goes to the "No Signal" screen for I guess about 15 or 20 seconds and after that it gets to my log on screen.
Very strange as has never happened before I used to get great boot times but this has killed that, I know its not a huge issue but I'd really like to get it solved and have my quick booting PC again!

I have checked boot sequence is correct but thats about as far as I can go on my own lol, I guessing it may be something to do with the Onboard Graphics in the 4790k & my GTX 970 maybe something doesnt like something else (tech speak) but I have no idea how I would proceed with troubleshooting and getting if fixed!

Any light shed on this would be great,

Many thanks for reading


My System SpecsSystem Spec
.
11 Jul 2016   #2
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

It seems to be fairly normal for there to be a short loss of video just after the Windows logo, but 15 to 20 seconds, and the "No signal" message seems a bit odd.

If I recall correctly, that little space is when the video and other drivers are loading and/or finalizing their setup, and the computer is deciding what screen to use. I have read that the GPU actually scans on of its ports on startup, and that is what causes the screen to go blank for that short period, as the GPU is sorting out which screen to use for the primary monitor. It doesn't matter how many screens you have, it still goes through the check.

I would start troubleshooting by making sure that all of your drivers are installed and up to date. Check your Device Manager screen to see if there are any yellow triangles. Those might be slowing down your boot.

If those check out, we can move on to the Event Logs.
My System SpecsSystem Spec
12 Jul 2016   #3
557953

Windows 7 Ultimate x64
 
 

Hi

Thanks for replying

Ok so I checked all drivers with the Gigabyte updater for my board updated any that needed it aside from Realtek HD Audio (had issues with it before and don't use it anymore) the Nvidia drivers should be fine as I only reformatted an couple of days ago and I got everything from their website.
I did have a Yellow Triangle in the Device manager (SM Bus Controller), but after updating all my drivers that has disappeared!

Rebooted a couple of times to see if it was still happening and it's still doing the same thing! I counted 18 seconds on first reboot & 13 on second reboot.

Hope that is all helpful to finding the Issue
My System SpecsSystem Spec
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12 Jul 2016   #4
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

Can you post a screenshot of your startup items, please?

Run "msconfig" (no quotes) in the search bar in the start menu and select "Startup" items. Take a screen shot of that and let us have a look.
My System SpecsSystem Spec
12 Jul 2016   #5
bigmck

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

I agree with Mellon Head that there is a pause after the Windows Logo screen. I have a SSD so mine boots faster. How long does it take for your complete boot from the time the first screen comes on until you see the desktop? == Do you have an SSD?
My System SpecsSystem Spec
13 Jul 2016   #6
557953

Windows 7 Ultimate x64
 
 

Hi I'll post my start-up when I get home from work.



Yeah I have a SSD installed! Well it used to boot very quickly and still does in a way, but now there is a long pause with "no signal" in the middle of the boot. It used to do it exactly the same but without this 15sec spent on that screen.
If it had always done it I'd not be bothered lol, but as its only since the last format it's really annoying me to know whats different this time around!

When I get home I'll send a screen of my start-up and do a low res video on my phone of the boot process from start to finish to see if it help figure it out!
My System SpecsSystem Spec
13 Jul 2016   #7
bigmck

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

Quote   Quote: Originally Posted by 557953 View Post
Hi I'll post my start-up when I get home from work.



Yeah I have a SSD installed! Well it used to boot very quickly and still does in a way, but now there is a long pause with "no signal" in the middle of the boot. It used to do it exactly the same but without this 15sec spent on that screen.
If it had always done it I'd not be bothered lol, but as its only since the last format it's really annoying me to know whats different this time around!

When I get home I'll send a screen of my start-up and do a low res video on my phone of the boot process from start to finish to see if it help figure it out!
The video is a good idea.
My System SpecsSystem Spec
13 Jul 2016   #8
557953

Windows 7 Ultimate x64
 
 

Ok here we go Even on my phones 480p setting the video came out too big to upload in one piece so I lowered the bitrate to get it under 8mb and zipped it

As you can see the Windows Logo loads at about 12seconds then I get a blank screen for a couple of seconds, the the TV notices there is nothing there and goes to "No Signal".

Its really weird as before this format it didn't do it and I try to do everything the same each time ... so... just annoying lol.

Thanks to you guys for trying to help,


Attached Thumbnails
Screen goes blank for a few seconds during boot-startup.jpg  
Attached Files
File Type: zip Startup 480r.zip (6.67 MB, 1 views)
My System SpecsSystem Spec
13 Jul 2016   #9
bigmck

Windows 7 Home Premium 32-Bit - Build 7600 SP1
 
 

Yea, that is weird and I have no idea what could cause it. Since you don't mind doing a clean install, I would say do another one and see what happens.
My System SpecsSystem Spec
13 Jul 2016   #10
557953

Windows 7 Ultimate x64
 
 

Ok then, I'll report back in an hour or so!
My System SpecsSystem Spec
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 Screen goes blank for a few seconds during boot




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