Upgrading and Existing Computer

Upgrading an Existing Computer:
Upgrading a computer consists of altering or adding to its component parts, so that the overall system is improved. This improvement may be one of speed or it may be one of added functionality. In some cases, this upgrade can be achieved by external odd-ons, or it may result from additions or alterations inside the computer case itself. An example of external improvement would be the fitting of an external modem or mouse, while an integral upgrade would be adding extra memory or a sound card.

Upgrading can include RAM: Adding RAM is often the most cost-effective upgrade you can make to speed up a sluggish computer. PCs that had more than enough RAM when they were new often have trouble keeping up with the demands of the latest programs after a few years. New operating systems almost always call for more memory, too. When a computer runs short of RAM, it's forced to swap the overflow data on and off of the hard drive, which can significantly slow performance.

User can upgrade windows by Vista such as before if he was using Windows’ 2000 you can upgrade it by installing windows vista. If you don’t have Windows Vista drivers for all your hardware, it is a good idea to download all the drivers from the website and save all the necessary drivers on a CD-R before you start the installation. The need of upgrading it; vista Protect against hardware failure with Windows Complete PC Backup and Restore, it gives better protect your data against loss with Windows Bit Locker Drive Encryption.
Install Anti-virus software: clean up the hard drive and other unnecessary files which is no longer required.
If DVD drive is not capable to read data form other storage CD than clean a DVD driver scanner with cleaner CD. These read errors could cause software installation issues or issues while running the program. If DVD drive is not working than replace with new drive.