我的电脑主题变成Windows经典模式了，XP模式不见了

开始→控制面板→系统→高级→性能→设置→视觉效果→勾选【在窗口和按钮上使用视觉效果】确定

再看一下主题服务开启了没有？调整服务的方法是：

【开始】→【控制面板】→【管理工具】→【服务】→【Themes】→启动、自动

参考资料：【电脑应用·桌面设置面面观·各取所需】（可以使用百度搜索引擎找到此博文）

theme服务问题，

把以下内容复制到记事本里面，另存为themes.reg文件，双击这个文件，导入注册表：

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Themes]
"Type"=dword:00000020
"Start"=dword:00000004
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,73,\
00,76,00,63,00,68,00,6f,00,73,00,74,00,2e,00,65,00,78,00,65,00,20,00,2d,00,\
6b,00,20,00,6e,00,65,00,74,00,73,00,76,00,63,00,73,00,00,00
"DisplayName"="Themes"
"Group"="UIGroup"
"ObjectName"="LocalSystem"
"FailureActions"=hex:80,51,01,00,00,00,00,00,00,00,00,00,03,00,00,00,53,00,65,\
00,01,00,00,00,60,ea,00,00,01,00,00,00,60,ea,00,00,00,00,00,00,00,00,00,00
"Description"="为用户提供使用主题管理的经验。"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Themes\Parameters]
"ServiceDll"=hex(2):25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,\
00,74,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,\
73,00,68,00,73,00,76,00,63,00,73,00,2e,00,64,00,6c,00,6c,00,00,00
"ServiceMain"="ThemeServiceMain"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Themes\Security]
"Security"=hex:01,00,14,80,90,00,00,00,9c,00,00,00,14,00,00,00,30,00,00,00,02,\
00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,00,01,00,00,\
00,00,02,00,60,00,04,00,00,00,00,00,14,00,fd,01,02,00,01,01,00,00,00,00,00,\
05,12,00,00,00,00,00,18,00,ff,01,0f,00,01,02,00,00,00,00,00,05,20,00,00,00,\
20,02,00,00,00,00,14,00,8d,01,02,00,01,01,00,00,00,00,00,05,0b,00,00,00,00,\
00,18,00,fd,01,02,00,01,02,00,00,00,00,00,05,20,00,00,00,23,02,00,00,01,01,\
00,00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Themes\Enum]
"0"="Root\\LEGACY_THEMES\\0000"
"Count"=dword:00000001
"NextInstance"=dword:00000001

重启电脑，然后右键我的电脑-管理-服务和应用程序-服务找到Themes服务项双击启动，再到桌面空白处右键属性外观下面找到Windows XP。

网上可能下载不到原版主题文件的，你可以找朋友的电脑的系统中复制过来。
X:\WINDOWS\Resources\Themes
（X是系统盘符）

收到了就给别人分啊，别忘了！