[:|] some corel files are opening very slow

Indifferent 

Can any one help me ???????????????????????/

Some of my corel files with size 1MB open in 10-15 minute other file of 9 MB open in 3 minutes on same system.

System Configuration is

CPU 3.0GHZ

RAM 2GB DDR-II

HDD 80 GB , 5 GB free space on c drive

Temp files are cleared.

 

can any one give me solution please