Phpweb installation garbled

My VPS server is windows+iis6+php5.3.13+mysql5.1.61, after the installation of the front desk display normal, can enter the admin.php background always appear the following garbled:
Heard that php5.3 to encrypt the file needs Zend Guard Loader support, installed this or appear the following tips, how to solve.

zend2003120702114034274x2 蚗 蚽 6R, Yao 穅 yf 堳 k?q daughter rub. 6A 霠 Banna [yyre: Shen Waste Museum 嚲 d{separated Lin C $rv ting 撯 pf8 遬 resonance look 颕 Q arrived-e urinary collaboration ~ Oblique difficult discontented Poker: ling stupid/P boiled-'

There are still a few lines of confusion below. In the middle there is a "? "No.

Reply to discussion (solution)

Zend should not have been installed successfully.

Thank you, the space dealer helped me out,

I also appear this problem to solve ah ...

My VPS server is windows+iis6+php5.3.13+mysql5.1.61, after the installation of the front desk display normal, can enter the admin.php background always appear the following garbled:
Heard that php5.3 to encrypt the file needs Zend Guard Loader support, installed this or appear the following tips, how to solve.

zend2003120702114034274x2 蚗 蚽 6R, Yao 穅 yf 堳 k?q daughter rub. 6A 霠 Banna [yyre: Shen Waste Museum 嚲 d{separated Lin C $rv ting 撯 pf8 遬 resonance look 颕 Q arrived-e urinary collaboration ~ Oblique difficult discontented Poker: ling stupid/P boiled-'

There are still a few lines of confusion below. In the middle there is a "? "No.

What is the reason? ............

