How to Backup Windows7 drivers and use them to reinstall

How to Backup Windows7 drivers and use them to reinstall

Windows 7 RaviTeja   12:59:00 PM

I have seen many laptops like Dell, Lenovo even after installing Windows 7, having some drivers problems. What I used to do is download and install the drivers from concerned official website of the company. Or else, at time of buying, they will be providing with some motherboard CDs or DVDs. They'll include drivers too. But there is one more solution.

You can actually backup Windows 7 drivers and re use them.


In all versions of Windows the drivers are stored in the C:\Windows\System32 folder in the sub-folders Drivers, DriverStore and if your installation has one, DRVSTORE.  These folders contain all the hardware drivers for your operating system.  In the folder location, C represents the drive on which you have Windows installed, this may be a different letter on your system.

You can simply copy these folders out to seperate storage (DO NOT MOVE THEM) such as an external USB drive or Pen Drive.  When time comes to reinstall the drivers you can copy the folders back.
Now there are a couple of ways to reinstall the drivers.  The easiest way is to simply restart the PC when the driver folders have been copied back to see if Windows automatically detects drivers for uninstalled hardware.  This is possible, but won’t be the case for all your hardware.
To install drivers for the missing hardware you need to open the Device Manager.  You can do this by typing Device Manager into the search box in the Start Menu.  You will see all your uninstalled drivers highlighted with a small yellow warning triangle icon.  You need to Right-Click on each one and select Update Driver.  Because the correct drivers are already in the drivers folders on your computer, telling Windows to find the drivers automatically should always install the correct one.  You may however, in some cases, have to tell the Device Manager which folder to look for.  You can either point it directly to one of the two drivers folders, or just at the System32 folder; making sure you tick the box “include subfolders”.
There is an important caveat with this.  The drivers for 64 bit (x64) and 32 bit (x86) versions of Windows are usually different.  This means that if you copy x86 drivers into an x64 copy of Windows; or vice-versa, they will not install.  Windows will recognise them as being incorrect.  You cannot use this method therefore when migrating your system from the 32-bit version of Windows to the 64-bit version when, for example, adding more memory to your PC.

You CAN use this method to migrate drivers between Windows Vista and Windows 7 (and back again) as both operating system share the same driver model, but again not between x86 and x64 builds.  You CAN’T use this to migrate Windows XP drivers to Vista or Windows 7 however as Windows XP uses an older driver model and the hardware drivers for XP are not compatible with the newer versions of Windows.






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Difference between 32-bit and 64-bit

Difference between 32-bit and 64-bit

Microsoft Windows RaviTeja   11:54:00 AM

What is my version? 32-bit or 64-bit ?


If you are a Windows machine, right-click on your Computer icon in the start menu or desktop, and choose Properties from the menu. Windows 7 or Vista users will be able to check the System type in the list, while the few XP users with 64-bit will see it on the dialog.

Keep in mind that your CPU must support 64-bit in order to be running a 64-bit operating system.

More Problems with 32-Bit

Not only does 32-bit have a hard limit for the amount of memory it can address, there's also another problem: your devices, like your video card and motherboard BIOS take up room in that same 4 GB space, which means the underlying operating system gets access to even less of your RAM.

What's Different About 64-Bit?

While 32 bits of information can only access 4 GB of RAM, a 64-bit machine can access 17.2 BILLION gigabytes of system memory, banishing any limits far into the future. This also means that your video cards and other devices will not be stealing usable memory space from the operating system. Windows 64-bit Home editions are still limited to 16 GB of RAM for licensing reasons, but the Professional and Ultimate versions can use up to 192 GB of RAM, so keep that in mind when building that killer system.
The per-process limit is also greatly increased—on 64-bit Windows, instead of a 2 GB limit, each application has access to 8 TB of virtual memory without any special API, a huge factor when you consider applications like video editing or virtual machines that may need to use enormous amounts of RAM.
On Windows, the 64-bit versions also come with a technology to prevent hijacking the kernel, support for hardware-enabled data execution protection, and mandatory digitally signed 64-bit device drivers. You also won't be able to use your 16-bit apps anymore, which hardly seems like a loss.

Do 32-bit Applications Work on 64-Bit?

The vast majority of your 32-bit applications will continue to work just fine on 64-bit Windows, which includes a compatibility layer called WoW64, which actually switches the processor back and forth between 32-bit and 64-bit modes depending on which thread needs to execute—making 32-bit software run smoothly even in the 64-bit environment.
There are some exceptions to that rule, however: 32-bit device drivers and low-level system applications like Antivirus, shell extensions that plug into Windows, and some media applications simply won't work without a 64-bit equivalent.
In practice, the vast majority of your favorite applications will either continue to work, or provide a 64-bit version you can use instead—but you should check to make sure.



Does 64-Bit Use Double the RAM?

A common misconception about 64-bit Windows is the amount of RAM that is actually used—some people seem to think it will use double the RAM, while others incorrectly assume a 64-bit system will be twice as fast as 32-bit.
While it's true that 64-bit processes will take a little extra memory, that is a result of the memory pointers being a little bigger to address the larger amount of RAM, and not an actual double in size. Imagine, if you will, an ancient library filing system that has a card to tell you where to find the book in the library—if you got a bigger box to hold the cards, the library would not double in size, you'd just be able to find the book you were looking for more easily.
What will increase with 64-bit Windows is the amount of drive space needed for the operating system—with a compatibility layer in place, the base OS will take up a few extra GBs of space, though with today's massive hard drives that should hardly be a concern.

The Bottom Line, Which Should I Use?

If you are ordering a new PC with 4 GB or more of RAM, you should probably be running a 64-bit version of Windows so you can use all of the available memory, especially if you want a rig with a large video card just keep in mind that the Home versions only support 16 GB of RAM (for most people a 16GB limit won't be a problem, but it's worth keeping in mind).







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