Debug Issue in Visual studio 2010 SP1?

i have a problem with my visual studio that when i debug my code they not show me value of object when i hover on them.

for checking i see on Auto window then they show me value of every object and if i execute the expression in imme开发者_StackOverflowdiate window then they execute and give me value.

so that's means the problem is only that they not show me the value of object when i hover them.

for reset i already reset to Default C# settings and Web development code only but i still have a issue.

how i can solve this issue.