Costumer change password page is blank

dont know whether it can help you or not, but i found it in google search 😀 It was said that you have to update to this block.
I think you can see and try it. Good luck 🙂

<customer_account_changeforgotten translate="label">
    <label>Reset a Password</label>
    <remove name="right"/>
    <remove name="left"/>

    <reference name="head">
        <action method="setTitle" translate="title" module="customer">
            <title>Reset a Password</title>
        </action>
    </reference>
    <reference name="root">
        <action method="setTemplate">
            <template>page/1column.phtml</template>
        </action>
        <action method="setHeaderTitle" translate="title" module="customer">
            <title>Reset a Password</title>
        </action>
    </reference>
    <reference name="content">
        <block type="customer/account_changeforgotten" name="changeForgottenPassword" template="customer/form/resetforgottenpassword.phtml"/>
    </reference>
</customer_account_changeforgotten>