Black screen after loading screen

aazzam14 · May 11, 2013

Hi,
I just re install windows 8 after a virus attack,

So right now, with a newly install windows, after installing all the updates, i turn off my pc after using for a days. After i wake up the next morning, trying to turn on my pc, it just stuck on a black screen after the loading screen.

So what do to, and why is this happening

dodger46 · May 12, 2013

aazzam14 :

How did you re-install? From a Retail/upgrade disk? If so, see if you can boot Windows from the disk and access the Toubleshooting Menu...

Shubham Verlekar · May 13, 2013

Hello aazzam14,
Solution
PRESS F8 F8 LIKE MANY TIMES CONTINUES WHILE BOOTING IN WINDOWS
THEN INTHE CHOOSE AN OPTION MENU GOTO TROUBLESHOOT
AND SELECT WINDOWS STARTUP SETTINGS THEN
The next screen will ask you to restart your PC, after which you’ll see the familiar Advanced Boot Option screen – the same one that’s been around since Windows XP – and you can choose Safe Mode here. Make sure you select Safe Mode with command prompt.

Once you're logged into safe mode and the command shell is open, type the following code and hit enter: sfc /scannow

Let it do it's thing and when it's done it will say 100% complete.

You can now reboot and your computer should function normally.

Regards & Enjoy

aazzam14 · May 13, 2013

Shubham Verlekar :

Now i found out the problem comes from the graphics card.

Went i boot using the onboard vga, it boots normally, but setting it to boot using discrete graphics card, no boot, just windows loading screen then blank screen.

I think its a driver problem or some sort

Shubham Verlekar · May 13, 2013

What did u meanby
"Went i boot using the onboard vga, it boots normally, but setting it to boot using discrete graphics card, no boot, just windows loading screen then blank screen."

dodger46 · May 13, 2013

aazzam14 :

Boot into Windows using the onboard GPU and re-install the drivers for your Discrete card. Winkey plus X, Device Manager, Display Adapters. I would Uninstall the driver, then re-boot with the monitor plugged into the Discrete GPU to force Windows to load M'soft Driver. If you still don't get a display, reseat your GPU card, try again, and if no go suspect card failure...
Also check in your BIOS that PCI GPU is selected, should be automatic, but you never know...

Shubham Verlekar · May 13, 2013

Now, turn the system off after you lose video. Do this by pressing and holding the power button until it goes off. Switch the monitor cable back to the onboard card and restart. You may not see anything until Windows loads (the opposite problem as when using the new card). Once you can log onto Windows do so and at the desktop right click the mouse on the wallpaper (background) which will bring up the display settings box. (Ensure you have the proper drivers installed for the new video card and that the video card is showing up in the device manager [ right click on "my computer" then click "manage" then click on "device manager" in the left column. In the right column expand the "display adapters" by clicking on the "+" sign ] if the card shows with no error icons on it then you are good so far. Once you have the display settings open click on the "settings" tab at the top. You should see two squares with numbers "1" and "2" in them. This means that Windows "thinks" you have two monitors and there is your conflict!!

Here lies the issue, it is probably still using the onboard card as the "primary" monitor card. Click on the monitor it shows to be using and the card driving the monitor will show in the Display dialog box under the monitor area. The option to change uncheck "Use this device as the primary monitor" is grayed out too which means you cannot change it. Now, click on the other monitor box and see if your installed card appears in the Display dialog box. If so, right click on the monitor square. If "primary" is grayed out click on "Attached" then right click on the monitor box again now you should see "primary" no longer grayed out and it will let you click it. This will set the new card and monitor it is driving to your monitor. Apply your settings and close the Display Properties box. Shut down and plug your monitor cable into the new card and reboot. You should now have video as desired!! Now you can go into the Display properties again and if you are NOT using two monitors, click on monitor "2" and uncheck the "Extend my Windows desktop onto this monitor" box. Apply and happy computing!

aazzam14 · May 13, 2013

Shubham Verlekar :

Now, turn the system off after you lose video. Do this by pressing and holding the power button until it goes off. Switch the monitor cable back to the onboard card and restart. You may not see anything until Windows loads (the opposite problem as when using the new card). Once you can log onto Windows do so and at the desktop right click the mouse on the wallpaper (background) which will bring up the display settings box. (Ensure you have the proper drivers installed for the new video card and that the video card is showing up in the device manager [ right click on "my computer" then click "manage" then click on "device manager" in the left column. In the right column expand the "display adapters" by clicking on the "+" sign ] if the card shows with no error icons on it then you are good so far. Once you have the display settings open click on the "settings" tab at the top. You should see two squares with numbers "1" and "2" in them. This means that Windows "thinks" you have two monitors and there is your conflict!!

Here lies the issue, it is probably still using the onboard card as the "primary" monitor card. Click on the monitor it shows to be using and the card driving the monitor will show in the Display dialog box under the monitor area. The option to change uncheck "Use this device as the primary monitor" is grayed out too which means you cannot change it. Now, click on the other monitor box and see if your installed card appears in the Display dialog box. If so, right click on the monitor square. If "primary" is grayed out click on "Attached" then right click on the monitor box again now you should see "primary" no longer grayed out and it will let you click it. This will set the new card and monitor it is driving to your monitor. Apply your settings and close the Display Properties box. Shut down and plug your monitor cable into the new card and reboot. You should now have video as desired!! Now you can go into the Display properties again and if you are NOT using two monitors, click on monitor "2" and uncheck the "Extend my Windows desktop onto this monitor" box. Apply and happy computing!

I can understand the first part of your answer and its right, but i hardly understand the second part of your answer. the part to solving it

dodger46 · May 13, 2013

Need an update.. Did you manage to verify your GPU driver? Just to clarify, are you using more than one monitor?

aazzam14 · May 13, 2013

dodger46 :

I have only 1 monitor, i was able to update the discrete graphics card one time, but after some wrong settings in screen resolution, it blank again, did a system restore (only way to boot into windows), did the update again, but failed,blank screen.

P.s. This had never happened to me

lewdan · May 13, 2013

Try reinstalling windows 8 and see if that helps.

dodger46 · May 13, 2013

Try re-seating your GPU card in it's slot, and think about replacing it, or borrow one to try...

aazzam14 · May 14, 2013

I re-seat my graphics card, disable onboard vga in bios, and after windows loading screen, vertical black and white lines flickering on my screen

dodger46 · May 14, 2013

aazzam14 :

When you re-installed Windows did you delete all partitions on your HDD? It is just possible the virus survived on a partition.
I suspect that there is something wrong with your discrete GPU, but just in case, re-install Windows, only this time when you get to the screen 'Where do you want to install Windows', choose 'Drive Options (Advanced)' Highlight each partition in turn and 'Delete'. Do this until all you have left is 'Unallocated Space'. Choose that as where you want to install Windows and setup will do the rest...
If that doesn't work, change GPU!

aazzam14 · May 14, 2013

dodger46 :

I use diskpart in windows installation to format the hdd, plus i really dont want to buy a new gpu

(Maybe going to buy a new gpu HD7850, right now gigabyte hd7750)
Is it going to bottleneck with this specs:

AMD Atholon II X3 425 2.70GHZ
4gb kingston ram 1333mhz OC to 1600mhz
Gigabyte GA MA74gmt

dodger46 · May 14, 2013

Oh, well, diskpart should have done the job! Did you clean all at boot?
The GPU question is best asked in the GPU forum
http://www.tomshardware.co.uk/forum/forum-33.html

aazzam14 · May 14, 2013

dodger46 :

Right now doing CLEAN ALL and clean windows installation with onboard vga disable, an ethernet plug in (previously not plug in)

About bottleneck, just asking if anybody knows

Update: Did not work :??:

dodger46 · May 14, 2013

Think you've done all you possibly can, short of replacing the GPU, just hope it's not some obscure Motherboard fault! Meanwhile I hope the replacement card does the trick, at a glance I think your system will be just fine...

Black screen after loading screen

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