Ayuda con Windows Vista

Several users have encountered an issue wherein they receive the error message “0xc0000034″ followed by some other information (usually specifying a corrupt file) after attempting to install theWindows Vista SP2 update. Generally, this error message is accompanied by an inability to boot the system and a black screen with the aforementioned error message.WindowsFixUp reader Corus, forinstance, writes:
“My anti-virus Bitdefender found 3 trojans named Trojan.Heur and quarantined it. After SP2 finished installing, when attempting to reboot, a black screen came up and Vista would not startup (nothing I’ve tried so far has worked).”
Fix
To fix this issue, you will need to boot from the Windows Vista DVD. Follow these steps:
1. Boot from the Windows Vista DVD or the Windows Vistarecovery disc that was supplied with your computer by inserting it into the drive then restarting (if you don’t have this disc or can’t find it, you can download a replacement here). (Note: if yoursystem does not automatically boot from the Vista disc when it is inserted, you need to change the boot device in BIOS. To do this, boot from the installation disc, insert the disc, then restart, andwhile the computer is restarting, continually press the appropriate key [F12 on most systems, F1, F2, F10, the Delete (del) key or the Escape (ESC) key on others -- consult your user's manual orperform a Google search for your specific model] then select CD/DVD/CD-RW as the boot drive.)
2. Choose your language settings and hit “Next”
3. Click “Repair Your Computer” at the bottom of thescreen. This will launch Windows Recovery Environment (WinRE)
4. Choose the installed OS to repair, and you will see a list of recovery tools.
5. Open the command prompt
6. Enter thefollowing commands, pressing enter after each, to create a Manual System Restore (as discovered by Arun Kumar on the TechNet discussion boards):
* cd windows\system32\config
* ren default...