Black Screen after login in Windows 7

[ejardinado]

Hi,

I have an HP G72 laptop that has Windows 7 Home Premium OA. Since March 14, 2013 it's showing me the black screen right after I login. Only the cursor is there and it's movable. It all started when I installed the Win7 Service Pack 1 on March 13. Before that, I would get a message that Scan/Check Disc couldn't be opened because of some recent update but it would go on without any issues. I thought that updating it again would fix that problem. It just game me more.

I tried the System restore via the command line but failed. It said that my Anti Virus (Avast! Free) was running. I have uninstalled the AV and that didn't do anything. The oldest restore point was March 3. It said that it failed to extract a file related to Avast!.

I tried pulling out the Task manager be it wont open.

I can go into Safe Mode and I have tried Startup Repair. It found nothing.

I have done chkdsk/f c: and sfc /scannow but both didn't fix anything.

I need help please.

Thank you.

 

[NoelDP]

In Safe Mode, try creating a new admin user account - can you then access that after a reboot?

What happens if you try a Clean boot?
How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8

 

[ejardinado]

I haven't tried doing a Clean boot. Will it affect my files?

 

[ejardinado]

I created an Admin account and accessed it upon reboot. Instead of a black screen with a cursor, it gave me a (light) blue screen with a cursor. I heard this error sound right after log in but I could see the message. I did the clean boot and nothing happened.

 

[ejardinado]

Startup Repair was a bust.

 

[NoelDP]

It sounds than as if it's probably a driver problem -
in Safe Mode, open Device Manager - are any devices tagged with yellow or red flags?
Enable viewing of hidden devices from the toolbar - does anything show with error flags now?

 

[ejardinado]

Yes, there are 3 tagged with yellow flags under the hidden devices. Avast! Network Shield, Security Processor Loader Driver and Symantec Vista Network Dispatch Driver. The tag was "This device is not present, is not working properly, or does not have all its drivers installed. (Code 24)"

 

[ejardinado]

I uninstalled the avast network shield and rebooted. Now, every time I log in Safe Mode, it suddenly restarts to Normal. I'm sorry if I acted with asking first.

 

[ejardinado]

Safe Mode is back to normal.

 

[ejardinado]

For some odd reason, Avast! Network Shield has returned even after I uninstalled it in the Hidden Devices. Security Processor Loader Driver yellow tag has been removedand Symantec Vista Network Dispatch Driver remains the same.

 

[NoelDP]

Run the Norton Removal Tool to get rid if the dregs of that POS.


Download theNorton Removal Tool from here https://www-secure.symantec.com/norton-support/jsp/help-solutions.jsp?lg=english&ct=united+states&docid=20080710133834EN&product=home&version=1&pvid=f-home



Close all otherprograms, then run the tool. When it's complete, reboot the machine whether it asks for it or not.



Afterthe reboot, open an Elevated Command Prompt, and run the following command



NETSH WINSOCK RESET



You'llbe advised to reboot - do so.

 

[ejardinado]

I will do this tonight. Ill keep you posted. Thank you!

 

[ejardinado]

Okay. I did what you said above and the Symantec Vista Network Dispatch Driver tag has disappeared but the Security Processor Loader Driver reappeared and Avast! Network Shield still remains. Also I've noticed that avast! Free AV is still there. I could have sworn I uninstalled the whole program before.

 

[ejardinado]

Also, there was a pop up when I logged back in to the normal log in. It said " You cannot open a Click-to-Run app while you are repairing or removing a Click-to-Run application. Complete the existing action, and then try again." Then after that another pop up for Microsoft Office Starter 2010 Click-to-Run come out and ask if I wanted to download an update. I was afraid to download, so i didn't.

 

[NoelDP]

You have Office 2010 installed in Click-to-run mode?
I have to admit it's not something I've ever used, and know nothing about.
I'll se if anyone else here does know, and do some research and see what I can find.

 

[Layback Bear]

I have noticed that a problem started post #1 before SP-1 was installed. Avast could of not been completely uninstalled or it would not be popping up. I noticed that two anti viruses were used at one time. Their is know way of knowing what problems two anti vireses fighting each other could of caused. With so many unknowns I would suggest a clean install and properly updated. Then using MSE.

http://www.sevenforums.com/tutorials/219487-clean-reinstall-factory-oem-windows-7-a.html

Microsoft Security Essentials - Microsoft Windows

Is the Office Starter 2010 a trial version? If it's time has expired it will not work again.

 

[NoelDP]

I don't think we're at the reinstall stage yet (thanks Bear, for forcing me to review the thread!)

Since Avast is seemingly in a semi-uninstalled state, it would be a good idea to run their removal tool to ensure that it's completely removed....


Download the Avastremoval utility from here http://www.avast.com/uninstall-utility

Follow theinstructions for running it, and when complete, reboot the machine. and run the NETSH WINSOCK RESET command and reboot again

 

[ejardinado]

I will update you both when I get home. Thank you for all your replies.

 

[ejardinado]

Alright. I have successfully removed Avast! from my computer and did what you told me. The only remaining entry that is tagged is the Security Processor Loader Driver. And the black screen is still there.

And as for the Office Starter, I think it was a trial version. I was installed on the laptop when I got it.

Hopefully, we won't need to do a clean reinstall.

I did a few digging in the forum and read that the Security Processor loader Driver had something to do graphics card. Should I follow that? Or do you have any other suggestion?

 

[ejardinado]

Still no improvement.