Avast update error + computer not working

Turns out I am required to dowload something and I cant get pass the black screen.

Sounds like your bootloader is corrupted. If your OS is WIN 7, you can try the repair option from the installation CD. Do research this first before trying.

Is the screen totally black or are text messages being displayed once you attempt to boot into Windows? If messages are shown, write them down and post to this thread.

Unfortunately, I do not havemy cd with me and a need a solution that can fix it asap because I require my computer for school.

It boots up as a normal comp butafter logo, it goes to black screen with no words but a mouse pointer.

What ver. of Windows do you have?

Windows 7 home premium x64

Are you sure Safe mode does not work? Tap the F8 key as the PC boots.

If you can get into Safe mode, then check your graphics drivers in Device Manager. Many black screens in Win 7 are causes by corrupted graphics drivers.

Safe mode doesnt work…

Goes after windows logo, it goes black screen.

Sounds to me your only option left is to try a repair from a WIN 7 Premium x64 installation disk. Try to see if someone has their disk at your school. Make sure you know your product key before doing a repair since it might ask for the product key.

I have the key. I will ask around. Would it be better to ask for upgrade or full install?

If you using an upgrade disc i dont think there was a repair function with that, you need the full disc of the version that is already installed on your system or a system repair disc that hopefully you created when you first got your system.

Okay. I wull try that out eventually.

Make sure when you do select the repair option from the installation disk, you first try the option to repair your start up files. I have run that a couple of times sucessfully when I borked my boot loader files when I was fooling around with my dual boot XP and WIN 7 setup.

Do make it a point in the future to create a WIN 7 recovery disk and keep it always with your PC for instances like this.

I will keep that in mind in the future. If my HDD is not fails its scan, does that mean I should still repair?

If my HDD is not fails its scan

Are you now running HHD diagnostics using a bootable CD? What is the result? Are you getting SMART errors?

HDD errors are an entire different issue.

I go into the BIOS and I run the HDD diagnostics test and it always fails.

It still goes to the black screen even when I am using the qindows disk. It goes to either Safe mode or run normal options when first booted. After choosing, it goes to the windows logo and then a black screen with the mouse.

I solved the last prob because my laptop had usb cd drive. But now there is no repair option available. So how should I procees?

Check this out: http://neosmart.net/wiki/display/EBCD/Recovering+the+Vista+Bootloader+from+the+DVD

Do option 1 only! Note the text about you might have to run option 1 multiple times.

I tried that method a few times and still no repair option.

It still goes to the black screen even when I am using the qindows disk. It goes to either Safe mode or run normal options when first booted. After choosing, it goes to the windows logo and then a black screen with the mouse.

Originally you said you couldn’t boot into safe mode. Later you said the above. If you can boot into safe mode, go into device manager and check out your graphics drivers. Personally I think that is your problem. You can always uninstall the existing graphics drivers and reboot. Win 7 should find drivers for your graphics drivers and reinstall them; at least the drivers that were current for the WIN 7 ver. you have installed. If that cures your normal boot problem, you can them install current drivers for your graphics card.

Another option is to try a system restore from an archive prior to when your problems started. Not always works and can make matters worse.

If the above don’t work, I am out of suggestion other than take you PC to a pro for repair or reinstall WIN 7. If you reinstall Win 7, you can backup all your important files from safe mode prior to the reinstall.