I suggest you install more RAM and do a hard disk maintenance before you install the printer driver.
Hard disk maintenance should be carried once a month to make your computer run efficiently. This removes redundant and temporary files, recovers disk space and speed up hard disk access
. Disk Cleanup should be done first - Click My Computer - then right click on the C drive then click Properties, then click Disk Cleanup - let it examine the C drive then it will calculate the amount of disk space it will recover, tick all the boxes to recover the maximum disk space and then Click OK and then Yes to perform these actions. If you have a D drive then repeat these steps on this drive too. Next the C drive needs to be Defrag. This process converts fragmented files into continuous files and this speeds up disk access and makes the hard disk not work as hard. Click on Start - All Programs - Accessories - System Tools - Disk Defragmenter - click to highlight the C drive and click Analyse - then click Defragment.
When this is completed repeat these steps for the D Drive if you have a D drive. Disk Cleanup and Defrag can take a long time to complete, especially if these tasks have not been for a long time. http://www.fixya.com/support/r3559146-hard_disk_maintenance