We have to do this because as they monitor the machine for modifications to system files, they can disrupt the copying of new files from the installation DVD over the old files on the hard drive. After the upgrade, you can reinstall the programs. As a precaution, you should also download and save on a CD or Pendrive all the necessary drivers for the operation of your computer, especially the network drivers, essential for your internet connection.
After backing up, remove the temporary files and other "junk" that may have accumulated in the system after an extended period of use. To do this click the Start Menu, type folder in the search field, and select the Folder Options item in the results. In the window that appears, click on the View tab and check the Show hidden files, folders, or drives option and click OK.
Now do a disk cleanup. Click the Start Menu and select Computer. Right-click on your main HD usually C : and select the Properties item from the menu. In the window that opens, click the Disk Cleanup button on the General tab.
Wait for the disk to be scanned and click the Clean System Files button. Wait for a new scan. In the window that appears, click Delete. Then go back to the Disk Cleanup tab, check the boxes in front of all the items in the list, and click OK. The utility will get rid of old versions of system files, temporary files, and other digital junk. Depending on how much junk is accumulated on your hard drive, this can take anywhere from a few seconds to several minutes.
After all this, there are still some folders of which you will have to get rid of manually. Delete anything that is inside the Prefetch and Temp folders. Do not delete the folders, just the contents of them. Then go back to C: and open the Users folder. Open the folder with your user name and inside it the AppData folders, then Location, then Temp. Delete everything inside and restart the PC. Once the preparation is complete, it's time to start reinstalling Windows. You will need a DVD installation system with the same version already installed on your PC and at least 10 GB of free space on the hard drive.
The installation disc needs to be "cleaned", meaning recovery discs that came with your PC, customized by the manufacturer, will not work. You will have the option to Connect to receive the latest updates for the installation or Do not get the latest updates for the installation.
If your internet connection is working, it is better to connect. If the file can be opened usually, go to "Save As" and choose an Excel format. Then, it will recover the corrupted Excel.
Another applied method to fix corrupted and damaged system files is to restore from the previous versions. Find the damaged file, right-click it, and select "Restore previous versions. If your system permits, find and select the correct version of the same from the list and click on the "Restore" button. Now hopefully, you know how to repair corrupted and damaged system files in Windows 7 automatically.
If you have installed any theme on your system, it will revert to the default explorer. Following the above, you would learn how to repair corrupted and damaged system files in Windows 7. Nevertheless, it is observed that, at times, the SFC feature doesn't yield the desired results. Also, you might not be able to access your content on your Windows system. In this case, you can use Recoverit Pro.
Being one of the oldest and most trusted data recovery tools, it can easily retrieve your lost or deleted content. The latest Pro version has tons of advanced features as well as operating system crash recovery. Download and install Recoverit on your computer, get a blank USB drive, and connect to the computer.
Launch Recoverit and follow the next steps to recover Windows 7 data. Step 1: Select the data recovery mode. Step 2: Create a bootable media Create a bootable drive to recover data when the Windows system is unable to launch.
Ensure you have backup your important data before formatting the USB flash drive to create a bootable drive. Click the "Format now" button to confirm. Step 5: Recover Windows 7 with Bootable Media After creating a bootable drive, you can copy Windows 7 and recover data from Windows 7 hard disk.
But sometimes, you will need to change the computer boot sequence, restart the computer, enter the BIOS with the function key F12, or check the full solution to set the computer to boot from a USB drive. Get clear ideas below and follow the stepwise guide to repair Windows 7 without CD. You have three choices, please check them and select one per your needs.
You will see the Windows Error Recovery screen as the picture shown below. However, because of various reasons, you may meet Windows 7 Startup Repair loop problem without loading the normal Windows. In this case, it seems that you will need the Windows 7 installation CD to launch the Startup Repair yourself.
But the problem is that you don't have the installation disc at hand. So is it possible to repair Windows 7 without CD? Well, the answer is Yes. Step 3. Then you will see the Advanced Boot Options screen. Sometimes, the Startup Repair option may not be available and you will be asked to use a Windows installation disc to repair your computer. Please prepare them and then follow steps below. Step 1. Plug your USB flash drive into Windows 7 computer and be sure it can be detected.
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