Step 1: Start>run>sysdm.cpl
Step 2: Advance
Step 3: Under performance >Setting
Step 4: Advance
Step 5: Under virtual memory> Change
Step 6: Uncheck Automatically manage paging file size for all drives
Step 7: Costume size

formula for set Initial size and maximum size
initial size= Minimum allowed + recommended
maximum= initial size * 2

Step 8: Set > Ok

Note: Never set virtual memory in odd number keep always even number