Showing posts with label pc. Show all posts
Showing posts with label pc. Show all posts

Thursday, July 9, 2009

How to Connect Two Computers Using a LAN Cable

While most home networking is done through a router with multiple Ethernet cables, you may not need to purchase all that equipment if you only have two computers that need to transfer files to and from each other. You can network two computers directly together using a single local area network (LAN) cable known as a crossover cable.

Step 1. Measure the distance between the two computers and write down the length. Purchase an Ethernet crossover cable that is slightly longer than the measured length

Step 2. Power off both computers completely. Connect one end of the crossover cable to the Ethernet network port on the back of one of the computers. Run the cable across to the other computer, and connect the other end into the computer's Ethernet port.

Step 3. Turn both of the computers back on, and wait for their operating systems to finish loading. Click on the "Start" button on either of the computers and then choose the "Control Panel" option. Scroll down through the list of options, and click on the icon labeled as "System."

Step 4. Wait for a new window to pop up asking if you want to proceed, and click on the "Continue" button. Scroll down to the "Computer Name" heading, and write down the entry listed under "Workgroup."

Step 5. Go to the second computer, and access the System menu in the Control Panel. Scroll down to the Computer Name heading, and click on the "Change" button. Type in the work group name you wrote down earlier in the "Workgroup" text box. Click on the "Apply" button.

Step 6. Restart the computer to save the workgroup change. Navigate back to the Control Panel, and click on the "Network and Sharing Center" icon. Choose the "View Computers and Devices" option to gain access to the other computer's files and folders.

Tuesday, June 30, 2009

Best And Fast Way To Lock Your Computer

Lock My PC™ is an easy in use, powerful and compact tool to lock your computer from unauthorized use. When you leave your computer unattended, the program disables the hot keys (including Ctrl+Alt+Del), mouse, locks CD/DVD ROM doors and displays a lock screen. Nobody can access your system without providing the correct unlock password.


Unlike another similar computer lock software that cannot lock Ctrl+Alt+Del on a computer running Windows XP, our Lock My PC runs own keyboard driver to block such key combinations. Moreover, bulletproof startup lock guarantee that when your computer locaked at startup, this lock cannot be bypassed even in safe mode!

Why Lock My PC ?
You don't like snoopers. They are always prying into your e-mail messages, programs, data, files, etc. Lock My PCallows you to lock your computer with a password while you leave it unattended. You can lock your computer manually, with a menu or hotkey, or set up auto lock when your computer is idle.

Features and benefits:

  • Quick and safe computer lock by hot key, or mouse click
  • Autolock when computer is idle
  • Correct Ctrl+Alt+Del lock
  • Bulletproof startup lock (couldn't be bypassed in safe mode)
  • Different installation mode - setup for home or corporate use
  • CD/DVD-ROM doors lock
  • Multi-user support
  • Multimonitor support
  • Auto turnoff when computer is locked for a long time
  • Blind password option
  • Stealth mode
  • Windows XP x64 compatibility
  • Custom lock screens
  • Cycling lock screen images
  • Screen saving effects
  • Lock screen transparency - you can view movies under the locked screen
  • Password protected settings, quit and uninstall
  • Command line options
  • and many more ...

Difference from standard Windows XP computer lockfeature
A lot of users believe that Lock My PC (as well as any other third party computer lock software) is useless because Windows XP has integrated computer lockfeature. Well, indeed, you can simply press Win+L onWindows XP computer keyboard and your screen will be safely locked. What advantages Lock My PC has over Windows computer lock?

First of all, when your computer is locked by Windows Lock feature, anyone who has Windows Administrative privileges can unlock your computer. Such unlock will force to close your session (all unsaved changes will be lost). If Welcome screen option is enabled on your computer (the default settings for non-domain computer), Win+L doesn't lock the computer at all - it temporary switches the user off and displays the welcome screen - if you share your computer with others, they can logon with their usernames and use your computer. Moreover, if you share your account with other users (it's common for home PC), Windows XP lock feature is useless at all - your folks will unlock your computer without any problem.

Another benefits of Lock My PC in comare with Windows lock feature:
  • Custom lock screens and transparent lock screen options - your computer can be used as a presentation machine - the screen displays pictures or video, but nobody can touch your computer;
  • Secure Lock before Windows welcome/logon screen;
  • Displaying unsuccesfull unlock attempts - you will be notified if anyone tried to unlock your computer;
  • If Lock My PC is used in muilti-user mode, a supervisor can unlock the computer without closing user session;
  • You can lock CD/DVD ROM doors along with thedesktop, keyboard and mouse - this can prevent CD media from being stolen while you are out;
  • Command line support allows you to use Lock My PCin Internet kiosks.

Safe and secure
Lock My PC provides reliable locking mechanism that impossible to bypass:
Keyboard driver installed with Lock My PC blocks different key combinations like Ctrl+Alt+Del, Alt+Tab, Ctrl+Esc and many others.
Booletproof startup lock ("Always lock at startup" option) displays password prompt box before Windows logon/welcome screen and (unlikle the most of desktop locking software) bannot be bypassed in Windows safe mode.

Easy to use
As soon as the installation completed, double click on the Lock My PC tray icon to lock the computer.
Right click on the tray icon to get access to the program settings. All settings are groupped by cathegoriies.

Autolock computer after certain time of inactivity
You can set up Lock My PC to lock your desktop automatically if the computer is idle during a certain period of time. Moreover you can set up Lock My PC to switch the computer off (Hibernate, Standby etc.) if your computer was locked during a certain period of time.

Stealth mode
Lock My PC can work in stealth mode. Stealth mode is a state when the program is running on your computer but does not show any sign of its presence in memory. To activate stealth mode, enable options "Do not show tray icon at startup" and "Hide Lock My PC from Task Manager".

Two installation modes
Lock My PC can be used both in single-user and multi-user environment. During the installation process, you will instruct Setup wehter to install Lock My PC in single-user mode or in multi-user mode.
In single-user mode, Setup will create Lock My PCshortcuts only for you. Locked computer can be unlocked only with your password. Some advanced options for corporate use will be blocked. This mode is ideal for home use.
In multi-user mode, Setup will create Lock My PCshortcuts for all user accounts. Each Lock My PC user will have their own password. The user who installed Lock My PC will be Lock My PC Administrator and his/her password - the administator's password. This mode is ideal for corporate use.

Custom Lock Screens
Lock My PC comes with a set of different lock screens. Lock screens are located in LockScreens subfolder of LockMy PC program folder.
You can create your own Lock Screen pictures and use them with Lock My PC. Your computer will look cool and unique when it is locked. You can use GIF, JPEG, BMP and animated GIF images as lock screens. Lock Screen transparency level option will allow you to vary the transparency from fully opaque to fully transparent. The latter allows you to lock keyboard and mouse only and may be helpful when you are watching videos or running presentations on your PC.

By the way, you can get this nice tool by downloading at
Here.

Monday, June 29, 2009

Maintain Your PC

If you've ever fried a CPU because you didn't clean your fan, lost a decade of your digital life to a hard drive crash, or spent four hours trying to remove a nasty virus, you learned a valuable lesson about the need to maintain your computer.

Medical experts remind us that "prevention is the best medicine" so as your personal computer support expert, I'm going to strongly advise that you apply the same logic to your computer!

These resources will help you keep your computer running in tip-top shape for as long as you choose to own it.

Backup Your Data

The most important thing you can do as a computer owner is to consistently and reliably back up the data stored on your hard drive. Hardware used to be the most valuable part of a computer but those bits and bytes are now the real investment.

You've spent huge amounts of money on software and digital music and video, and countless hours authoring documents and organizing your digital files. If you don't regularly backup this information, a serious computer problem could leave you with nothing but a huge feeling of regret.

Now that I've scared you a bit, use these resources to keep your data safe!

Update! Update! Update!

Keeping the software on your computer updated is no longer an optional part of computer ownership. Viruses, worms, junk mail, security breaches, hardware incompatibilities, and software conflicts are all now part of your daily digital life.

Updating your computer with the latest patches, fixes, and device drivers really can keep these annoyances at bay. Updates are freely available on the Internet for just about every antivirus program, email client, operating system, and piece of hardware you could possibly own.

These resources can help you locate these updates and keep your computer out of harm's way.

Keep Your Computer Clean

We all know that most things run a little better when they're clean. Water flows easier when your plumbing is clean, your car's engine runs better if you've been taking care of it, and your dryer does more in less time when you clean out the lint.

Your computer is no different. Keeping your files and folders tidy in your virtual world and clearing the dust and grime that builds up inside and outside your computer all play a part in keeping it running smooth day in and day out.

How To Make A Bootable Windows USB Flash Disk

Usually, if its an option in your BIOS boot sequence menu, the answer to this is yes. If its not there, look for BIOS updates. If you are not sure, proceed and see what happens

2. Sorting out the "Bootability" of your USB-Drive

Connect your USB drive to your computer, directly, without a Hub. Then, shut down your computer, disconnect any other hard disk drives from it, and insert your original Windows XP CD into the drive. Start the installation, and proceed to the section where you are allowed to pick a hard drive. If it goes beyond the partition selection, your drive is already fine for booting Windows XP. If not (seems to be the cases with many of the Freecom USB HDDs for example), you will get an error like "Windows is unable to find your drive, partition, data etc bla". This is usually not a big problem.


All you need to do is "properly" format the drive. Reboot into your normal Windows, and get this HP tool , and use it to format your HDD completely. I chose NTFS format, worked fine everytime i tried. After this, my drives are recognized as valid installation devices by the Windows XP installer.
(In fact, i did not manage to create a USB primary partition with FAT32 that was recognized as being installable)

3. Dumping the original Windows CD into an ISO File

Pretty easy one. Simply open WinISO, and select Actions -> Make ISO from
CDROM, and save your CD image.

4. Extracting the files we need to work on

After the CD dump is done, close and reopen WinISO. Then, open the ISO file you just created using File -> Open.
Now, click the I386 folder, and select the following files (Ctrl key to multi-select)

TXTSETUP.SIF
DOSNET.INF
USB.IN_
USBPORT.IN_
USBSTOR.IN_

Select Actions -> Extract and put the resulting
files into some folder to work on them.

5. Unpacking IN_ files

Use the Cab SDK (from the command line) for extracting the contents of the .IN_ files. Each of them contains exactly one .inf file. If you are unsure how to use the Cab SDK, here is an example command line:

cabarc x USBSTOR.IN_

You should end up with three new files in the folder, called:

usb.inf
usbport.inf
usbstor.inf

You can now delete the .IN_ files.

6. Editing the files

This is the main job. i ll also try to explain a bit whats happening. Use a simple Texteditor like
Notepad.

TXTSETUP.SIF

This file is loaded on the initial install step by the Windows XP CD installer. In this file, we will change the way Windows treats USB devices during system setup -- the default is to only treat them as input devices during installation -- we will change this to include mass storage driver support (which needs to be loaded into the installer much earlier in order to work).

First, move the following entries from
[InputDevicesSupport.Load] to the[BootBusExtenders.Load] section , as shown here

[BootBusExtenders.Load]
pci = pci.sys
acpi = acpi.sys
isapnp = isapnp.sys
acpiec = acpiec.sys
ohci1394 = ohci1394.sys
usbehci = usbehci.sys
usbohci = usbohci.sys
usbuhci = usbuhci.sys
usbhub = usbhub.sys
usbstor = usbstor.sys

[InputDevicesSupport.Load]
usbehci = usbehci.sys
usbohci = usbohci.sys
usbuhci = usbuhci.sys
usbhub = usbhub.sys
usbccgp = usbccgp.sys
hidusb = hidusb.sys
serial = serial.sys
serenum = serenum.sys
usbstor = usbstor.sys

... now the same for
[BootBusExtenders] and [InputDevicesSupport]

[BootBusExtenders]
pci = "PCI-Bustreiber",files.pci,pci
acpi = "ACPI Plug & Play-Bustreiber",files.acpi,acpi
isapnp = "ISA Plug & Play-Bustreiber",files.isapnp,isapnp
acpiec = "Integrierter ACPI-Controllertreiber",files.none,acpiec
ohci1394 = "IEEE-1394-Bus-OHCI-konformer Anschlusstreiber",files.ohci1394,ohci1394
usbehci = "Erweiterter Hostcontroller",files.usbehci,usbehci
usbohci = "Open Hostcontroller",files.usbohci,usbohci
usbuhci = "Universeller Hostcontroller",files.usbuhci,usbuhci
usbhub = "Standard-USB-Hubtreiber",files.usbhub,usbhub
usbstor = "USB-Speicherklassentreiber",files.usbstor,usbstor

[InputDevicesSupport]
usbehci = "Erweiterter Hostcontroller",files.usbehci,usbehci
usbohci = "Open Hostcontroller",files.usbohci,usbohci
usbuhci = "Universeller Hostcontroller",files.usbuhci,usbuhci
usbhub = "Standard-USB-Hubtreiber",files.usbhub,usbhub
hidusb = "HID-Parser",files.hidusb,hidusb
serial = "Treiber fur seriellen Anschluss",files.none,serial
serenum = "Enumerator fur seriellen Anschluss",files.none,serenum
usbstor = "USB-Speicherklassentreiber",files.usbstor,usbstor
usbccgp = "USB Generic Parent Driver",files.usbccgp,usbccgp

Next, we also have to write several keys into the registry. Convieniently, the txtsetup.sif allows you to specify files that are parsed and instered into the registry at install time. Insert the following in the [HiveInfs.Fresh] section:

[HiveInfs.Fresh]
AddReg = hivedef.inf,AddReg
AddReg = hivesys.inf,AddReg
AddReg = hivesft.inf,AddReg
AddReg = hivecls.inf,AddReg
AddReg = hiveusd.inf,AddReg
AddReg = dmreg.inf,DM.AddReg
AddReg = usbboot.inf,usbservices

and also in
[SourceDisksFiles]

[SourceDisksFiles]
usbboot.inf = 1,,,,,,_x,3,,3
bootvid.dll = 1,,,,,,3_,2,0,0,,1,2
kdcom.dll = 1,,,,,,3_,2,0,0,,1,2


Finally, save and close TXTSETUP.SIF. We are done with it.

DOSNET.INF

Now, open DOSNET.INF , and change the second
[Files] section to look like this:

[Files]
d1,usbboot.inf
d1,_default.pif
d1,12520437.cpx
d1,12520850.cpx

usb.inf

Change the bolded lines in the [
StandardHub.AddService] and[CommonClassParent.AddService] sections:

[StandardHub.AddService]
DisplayName = %StandardHub.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbhub.sys
LoadOrderGroup = Boot Bus Extender

[CommonClassParent.AddService]
DisplayName = %GenericParent.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbccgp.sys
LoadOrderGroup = Boot Bus Extender


usbport.inf

Change the bolded lines in the
[EHCI.AddService], [OHCI.AddService] , [UHCI.AddService] and [ROOTHUB.AddService] sections:

[EHCI.AddService]
DisplayName = %EHCIMP.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbehci.sys
LoadOrderGroup = Boot Bus Extender

[OHCI.AddService]
DisplayName = %OHCIMP.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbohci.sys
LoadOrderGroup = Boot Bus Extender

[UHCI.AddService]
DisplayName = %UHCIMP.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbuhci.sys
LoadOrderGroup = Boot Bus Extender

[ROOTHUB.AddService]
DisplayName = %ROOTHUB.SvcDesc%
ServiceType = 1 ; SERVICE_KERNEL_DRIVER
StartType = 0 ; SERVICE_DEMAND_START
ErrorControl = 1 ; SERVICE_ERROR_NORMAL
ServiceBinary = %12%\usbhub.sys
LoadOrderGroup = Boot Bus Extender

usbstor.inf

Change / Add
[USBSTOR.AddService] section to this:

[USBSTOR.AddService]
DisplayName = %USBSTOR.SvcDesc%
ServiceType = 1
StartType = 0
Tag = 3
ErrorControl = 1
ServiceBinary = %12%\USBSTOR.SYS
LoadOrderGroup = Boot Bus Extender

new file:
USBBOOT.INF

Create a new file called USBBOOT.INF in the same directory as your other changed files, and put the following content into it:

[usbservices]

HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","DisplayName",0x00000000,"USB Mass Storage Driver"
HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","ErrorControl",0x00010001,1
HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","Group",0x00000000,"System Reserved"
HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","ImagePath",0x00020000,"system32\DRIVERS\USBSTOR.SYS"
HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","Start",0x00010001,0
HKLM,"SYSTEM\CurrentControlSet\Services\USBSTOR","Type",0x00010001,1

HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","DisplayName",0x00000000,"USB 2.0 Enhanced Host Controller Miniport Driver"
HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","ErrorControl",0x00010001,1
HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","Group",0x00000000,"System Reserved"
HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","ImagePath",0x00020000,"system32\DRIVERS\usbehci.sys"
HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","Start",0x00010001,0
HKLM,"SYSTEM\CurrentControlSet\Services\usbehci","Type",0x00010001,1

HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","DisplayName",0x00000000,"USB2 Enabled Hub"
HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","ErrorControl",0x00010001,1
HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","Group",0x00000000,"System Reserved"
HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","ImagePath",0x00020000,"system32\DRIVERS\usbhub.sys"
HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","Start",0x00010001,0
HKLM,"SYSTEM\CurrentControlSet\Services\usbhub","Type",0x00010001,1

HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","DisplayName",0x00000000,"
Microsoft USB Universal Host Controller Miniport Driver"
HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","ErrorControl",0x00010001,1
HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","Group",0x00000000,"System Reserved"
HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","ImagePath",0x00020000,"system32\DRIVERS\usbuhci.sys"
HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","Start",0x00010001,0
HKLM,"SYSTEM\CurrentControlSet\Services\usbuhci","Type",0x00010001,1

HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","DisplayName",0x00000000,"Microsoft USB Open Host Controller Miniport Driver"
HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","ErrorControl",0x00010001,1
HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","Group",0x00000000,"System Reserved"
HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","ImagePath",0x00020000,"system32\DRIVERS\usbohci.sys"
HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","Start",0x00010001,0
HKLM,"SYSTEM\CurrentControlSet\Services\usbohci","Type",0x00010001,1


7. Repack the inf files into their original IN_ format

If you have not already deleted your extracted .IN_ files, do so now. They need to be replaced. Open a DOS shell again, and navigate to the folder with your changed files. Then exceute the following commands:

cabarc n USB.IN_ usb.inf
cabarc n USBPORT.IN_ usbport.inf
cabarc n USBSTOR.IN_ usbstor.inf

The three IN_ files should now exist again.

Congratulations. All out modifications are done.

8. Inject the changed files into the ISO

Open your Windows CD image again with WinISO. Navigate to the I386 folder, and delete the following files from the ISO, saving the changes to the ISO afterwards:

DOSNET.INF
TXTSETUP.SIF
USB.IN_
USBPORT.IN_
USBSTOR.IN_

Just to be sure all is updated in the ISO, cloase and repoen the ISO in WinISO. Now, again go to the I386 folder and select "Add Files". Now add your changed files, in detail:

USBBOOT.INF
DOSNET.INF
TXTSETUP.SIF
USB.IN_
USBPORT.IN_
USBSTOR.IN_

Save the ISO. You are done.

9. Burn the ISO back to CD

Feel free to use any burning package you want. I used the free and simple Burnatonce

10. Install Windows XP from the CD

Shut down your computer. Disconnect ANY internal and external hard drives (so Windows cannot find them during installation and mess up their Master Boot Records hehe). Some computers will have trouble to boot without an internal HDD attached, check in your BIOS and, if possible, remove the HDD from the boot sequence and set the USB Harddisk as the first boot device, and the CDROM as second.

Also, now connect your USB Harddrive directly to the computer, without any Hubs in between.

Windows should install just fine, with the exceptions noted below.

Issues you will encounter during installation:

During driver installation, the
USB drivers will prompt you, as they are "not certified" - This is normal. Our changes invalidated the checksum, and therefore the driver is no longer signed. Just press "yes" a couple of times.
Upon completion of the install, the system will complain once on the first bootup that the pagefile does not exist. You can ignore this for now, as
Windows will work fine without it. People are looking at fixing this issue, but its not critical for now.

Once everything is up and running , shut down and reconnect all your drives.