These steps will attempt to repair the OS by disinfecting and then using repairs via System Recovery Options
. It does not cover hardware problems which might be indicated if these steps fail to run and can be tested using Memtest86+ to Test RAM
and HD Maker's HD Diagnostic
Extended CD scan.
First try booting into Safe Mode with Networking
to install, update and run a full scan with Malwarebytes
If Safe Mode is not working, download, burn to CD or write to flash stick, boot and run a full scan with Microsoft Standalone System Sweeper.
If it fails try one of these FREE Bootable AntiVirus Rescue CDs.
If it cleans up enough that Windows 7 will start then run SFC -SCANNOW Command
Once the System is clean if it won't start boot into System Recovery Options
via the F8 menu or disk as shown in tutorial, run Startup Repair
repeatedly no matter what it reports. Post back results.
[If you need an installer for your licensed version to run Repairs or possible Clean Reinstall, download the latest official Win7 installer w/SP1 ISO
and write to flash stick using Windows 7 USB-DVD Download Tool
If Startup Repair fails repeately after 3 separate attempts with reboots, try System Restore from Recovery Options list, then if that fails open a Command Line to run SFC -SCANNOW Run in Command Prompt at Boot
As a last resort boot free Partition Wizard
bootable CD to Explore C to see if your files are intact, make sure C or the 100mb System Reserved partition (preferred) is marked Active
, then click on HD to highlight it, from Disk tab select Rebuild MBR, Apply. If Windows 7 doesn't start and you restored Active flag, run Startup Repair 3 Separate Times
If these all fail you can copy out your data using your Windows 7 DVD or System Repair Disk
using this method: Copy & Paste - in Windows Recovery Console
, or Paragon rescue disk to recover data
Then run Factory Recovery from its partition or disks you made or order from Tech Support, or follow these steps to Clean Reinstall - Factory OEM Windows 7
or Clean Install Windows 7