problem with windows side bar

[syner]

my friend have problem with windows side bar,more then explaining it i have attached screen shot of it

OS=vista,RAM=3gb,Graphic card=ATI Radeon 512mb,processor=AMD Athlon 64,kaspersky internet security up to date(licensed)its was working fine from few days windows side bar have stop working,it doesn't display anything which is shown by screen shot

[thetechfreak]

try adding the gadgets once again they might have been removed by mistake or Windows

then try to install 3rd party software like Google/Yahoo toolbar..download gadgets from net

[syner]

i have tried that but that doesn't worked what is the reason cause this error