After Win 7 update, can't boot from anywhere

Hi there, I need your help. I'll try to make it as clear and short as I can:

Today, after a Windows 7 (Ultimate, 32 bits) update, I restarted my PC. Minutes later it froze, since ctrl alt supr didn't work I restarted manually.

Since then, All I get is "Starting Windows" (without the window logo) and right after that, a BSOD: 0x0000005c.

But the problem is bigger:

I can't either boot from Win 7 DVD
I can't get into safe mode
I can't boot Windows XP either (I have dual-boot configured)

Can someone tell me what's happening?

Is it the HDD? The motherboard? A corruption originated after the update?

I will be grateful for help.

Is the computer beeping when it starts?

What is your hardware?

Beep codes:
http://www.computerhope.com/beep.htm

Hope this helps.

Thanks, but honestly, I dont remember that my PC has ever made a beep. Other PC's I've had did, but not this one.


my motherboard is a g31m-s asrock,
cpu core 2 duo 2,93ghz
power supply cooler master

Well you say you get to the "Starting Windows" message which should mean you completed post therefore you should be able to boot to a W7 DVD. You need to make sure the DVD is the first device in the boot chain (check BIOS settings) and then try again.

BTW, while you are in the BIOS see if it detects your hard drive. I suspect some sort of hardware failure (hard drive, etc) or it could be a virus. i would try to rule those out first.

I've changed the boot order before, I'm not an expert but I know how to do that.
Plus, I've been in this situation before (a win7 update gone wrong) and this DVD saved me, because it repaired my OS reverting changes.

Not so lucky this time,

And HDD is detected in the BIOS.

Hello again, I made an experiment:

I disconnected the sata cable of the HDD, tried booting from the WIN 7 DVD and the same BSOD shows up at the same time as it appears when I boot from C:

With this information, could we say that the problem is the motherboard?

Do you use a video card or on-board video? It's possible you got a bad video driver update. If you have a video card you might try yanking the card and using on-board video just to see if you can boot that way. If so, then restore to a restore point prior to the updates and go into Win Updates and uncheck the box that says "treat recommended updates the same as critical updates" (all driver updates come in as recommended). If this is the problem then once the driver is fixed you can shut down and reinstall your video card and reboot.

If this solves the issue then go to Windows Updates and permanently hide that video driver update. Note, from now on you will manually have to install recommended updates if you want them.

UPDATE: I just saw your last post. I would say, still disconnect the video card and try what you did but with just on-board video to see if that boots. In case it is the video card.

Yes I have a video card, an ATI Radeon. I'll proceed as you suggested.

I removed the video card and the problem persists.

So we can discard HDD and video card as origin of this I suppose.

I also have a sound card and a TV cards