USB SYSTEM LOCK

BOOT LOCK

This lock will allow you to use your USB stick as a key to boot into windows.If someone tries to start the computer without your USB stick, it will display boot errors. Before we begin let us tell you that playing with the BIOS and files of your computer may result in you not being able to boot into your partition;so continue at your own risk!

Now that we have absolved ourselves of all guilty,let's begin.

Things you need:A 64MB or larger sized USB stick,windows recovery disk.(Just in case)

Steps:

1) Unhide hidden and protected files: goto Tools>options>view, check show hidden files and unchecked hide protected system files.

2)From the driver where Windows is installed(normally C:\), copy the files boot.ini,ntdlr and NTDETECT.COM to your USB Stick.

3)Now,we need to go into your BIOS,so restart the computer and keep jabbing[F8] as soon as the computer starts.

4)Once in the BIOS,enable USB Drive as the first boot device.You might have to enable USB Legacy support on older BIOSes.

5)Restart your computer if all goes well you should be able to lg into windows.If not,then unplug the USB stick,return to the BIOS and change the first Boot device to your hard disk and repeat the steps above.

6)Once your are logged into Windows drive and rename boot.ini to boot.bak.

7)To check if you have setup everything correctly,eject your USB stick and reboot the computer.You should get error messages on the screen such as "Invalid Boot.ini" or "Windows could not start".

8)In case Windows does not load,use yours windows recovery disk by following the steps mentioned at http://tinyurl.com/s9sd2.

The other way

For the less brave-hearted,  instead of preventing Windows from booting you can choose to just lock your computer with your USB stick.

USB system Lock

A freeware program,USB system lock Works flawlessly while locking and unlocking your computer.When you install USB System Lock, it detects your USB stick  and creates a digital key on it.This key is used by the program to authenticate the user and log into the computer.

Strangely,the program is not included in the start-up list by default.

to add it there,you need it to drag agent from the USB system lock entry under all programs to the start up folder in the same menu.If you happen to accidentally delete the key from your USB stick while working on the protected computer you can reassign a key using start>programs>USB system lock>Key Disk Generator.

My Lock 2.0

This program takes USB-based computer locking to whole new level.You can look access to not only your PC but the keyboard,CD Drive and even access to safe mode.You can also set a particular time for the computer to automatically lock itself.What is most interesting about the phrase so that you can use it log into the computer even without the stick plugged in

HOW TO FIX CORRUPTED XP FILES

How to fix corrupted windows file is very easy.Following these following steps

Requirement:
1. Windows XP CD

Now, follow this steps:
1. Place the xp cd in your cd/dvd drive
2. Go to start
3. Run
4. Type sfc /scannow

 It should all load and fix all your corrupted file on win XP.Hope this method can fix your corrupted
xp system files.

 If this Does Not Work Then You Need to Format The Computer as there would be Viruses in the
PC and you can can Also Use the antivirus if the Possible otherwise format the PC .

RESTARTING WINDOWS WITHOUT RESTARTING YOUR PC

A modern PC with vista Home Edition takes about one and a half minute to boot.An older machine with XP is about the same.that,s 30 seconds for the PC itself (the BIOS) to boot up, plus a minute for the Windows OS to boot.


Sometimes,you need to reboot Windows(e.g When installing new software),but there is no need to restart BIOS, too.However,the default is to reboot both.(That's called doing a "cold boot", rather than a "warm boot"). There's a trick that works on the both XP and vista to get it to do a warm boot instead, thus saving you 30 seconds/cycle.


The trick is to hold down the SHIFT key when invoking the restart.


Windows Vista:Select start,then hover over the right arrow that is to the right of the padlock icon until the pop-up menu appears that contains "restart" as one of it's  choices.Hold down the SHIFT key while clicking on the "restart" choice.


Windows XP:select start.Select "Shut down...".Change the drop-down combo box under "What do you want the computer to do?" to "Restart".Hold down the SHIFT key while clicking on the "OK"

WILL WINDOWS WORK CONTINUOUSLY FOR MORE THAN 49.7 DAYS?

Here is a bit of information, which may surprise you all.Windows crashes automatically if you don't switch off the machine for 49.7 days.Microsoft accept this do you know this why?
In windows the virtual machine manager(VMM) is responsible for creation, execution,monitoring and termination of virtual machines.This VMM, which is a 32 bit, protected mode operating systems entity,provides a number of system services at chip level.One of the services is "Get-System-Time".

 Register with the time in milliseconds since windows started on that machine.This services is accurate to 1 ms. EAX is a 32 bit register in Intel 386 processor on wards.
So the maximum number of milliseconds it can hold is (232)-1=4294967.295 seconds=71582.79 minutes=1193 hours=49.7 days. So after 49.7 days the EAX reset to zero.Most of the drivers use this time services to keep track of the timeout of various services they provide. So after 49.7 days the drivers cannot use the get-system-time function of VMM and they taking the operating system along with.