System Restore.
System Restore
Windows should be installed after sheathing and before siding.
It would probably help if you just restore your computer to a previous point. Preferably, you should choose a time before you noticed that you had Earth Anti-virus installed.
Do a system restore and pick any date BEFORE you installed program. Google "system restore" with what kind of Windows (XP, Vista, Windows 7, etc.) and will give instructions. Mind you, other programs you installed during this period will also be taken away, so right those down if you have to re-install. All your personal stuff (email, photos, etc.) will not be affected.
All service packs
Yes you can ask it to restore its configuration to an earlier 'saved' restore point. Restore points are saved before Microsoft security upgrades.
I usually do a system restore to a couple of days previous.....it works. If you know exactly when you lost it, just restore it to the day before.
You need Windows XP installed before you can install Service Pack 3. However, if your installation media already contains Service Pack 3, then you do not need to worry about installing it since it will already be installed.
Restore your system back to the last restore point before the driver was installed. If that fixes the problem, see if there is a newer driver for the hardware, and see if that solves the problem.
You can install Windows 7 including SP1. To only install Service Packs you will need the base operative-system.
To Recover or restore your files that you have accidentally lost, System Restore might help. This is found in START-->PROGRAMS-->ACCESSORIES-->SYSTEM TOOLS--> SYSTEM RESTORE This helps when your computer is malfunctioning and crashing and was normal before. There are several dates and checkpoints that you can restore to which can be several months old. You will not lose your documents and music but programs which were installed (even games) might need reinstallation. If you have a problem with your computer you can also insert the windows boot CD (Windows CD) and install the windows over this one. It will improve performance. Also you can format your Harddisk and install the windows back again by shifting your essential files to another partition. Eg. If you want to delete C: drive, move all your music and everything else in D:
Restore points are snapshots of system files, settings, and installed applications at a specific time, created by the operating system to enable recovery from issues. They allow users to revert their system to a previous state without affecting personal files. Restore points are typically created automatically before significant system changes, such as updates or software installations, but users can also create them manually. However, restore points do not back up personal data, so it's important to have separate backups for important files.