方法1、
删除注册表中的键值
Step01 按Ctrl Alt Del组合键调出任务管理器，切换到“进程”选项卡，找到并关闭并中所有的explorer.exe和iexplore.exe进程。
Step02 依次点击任务管理器的“文件”－“新建任务（运行）”，在打开的“创建新任务”对话窗口内输入“regedit”（不含引号）打开注册表编辑器，定位到HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\explorer\分支，找到并删除StuckRects2、Streams、StreamsMRU三个键值，退出注册表。
Step03 切换到任务管理器，依次点击菜单栏的“关机”－“重新启动”，重启电脑即可。
方法2、用软件恢复到初始状态
下载安装并打仔雹开Taskbar Repair Tool Plus（任务栏绝戚山修复工具），在软件主界面“任务栏问题”下拉菜单中点选“恢复到默认”，接着点击窗口右侧的“修复”按钮，再在弹出的提示窗口内点击“是”按钮，即可恢复任务栏到Windows默认的安装状态，从而完成上述故障的修复。
Taskbar Repair Tool Plus! 1.1.1
主要用于windows xp的运激任务栏上各种问题的修复，比如修复“显示桌面”图标丢失、隐藏“开始”按钮、消除“气泡提示”等等。是一款好用的小工具，能轻易解决一些比较棘手的问题。
或者……
进入安全模式可以在任务栏看到任务窗口吗？
如果安全模式都无法看到，需要修复安装系统了
如果可以的话，一般就是用户配置文件损坏。
可以新建立一个用户。用新的用户登陆
把下面的代码 复制下来 复制到记事本 然后保存成 “.vbs” 就可以了
Set WSHShell = WScript.CreateObject("WScript.Shell")
Message = "本脚本用于修复Windows XP中当最小化程序时，无法在任务栏显示图标的问题。"& vbCR & vbCR
Message = Message & "为了兆败正常工作，本脚本将关闭和重启 Windows Explorer 外壳，这个操作不会损坏你的系统。" & vbCR & vbCR
Message = Message & "请关闭所有杀毒软件的实时监控！并保存所有打开的文件。"& vbCR & vbCR
Message = Message & "是否继续？"
X = MsgBox(Message, vbYesNo+vbExclamation, "注意")
If X = 6 Then
On Error Resume Next
WshShell.RegDelete "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StuckRects2\"
WshShell.RegDelete "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StreamsMRU\"
WshShell.RegDelete "HKCU\Software\族悄颤Microsoft\Windows\CurrentVersion\Explorer\Streams\Desktop\"
WshShell.RegDelete "HKCU\Software\Microsoft\Internet Explorer\Explorer Bars\{32683183-48a0-441b-a342-7c2a440a9478}\BarSize"
P1 = "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\"
WshShell.RegWrite p1 & "NoBandCustomize", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoMovingBands", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoCloseDragDropBands", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSetTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoToolbarsOnTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSaveSettings",0,"REG_DWORD"
WshShell.RegWrite p1 & "NoToolbarsOnTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSetTaskbar",0,"REG_DWORD"
WshShell.RegWrite p1 & "NoActiveDesktop",0,"REG_DWORD"
WshShell.RegWrite p1 & "ClassicShell",0,"REG_DWORD"
p1 = "HKCU\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\本地User\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\"
WshShell.RegWrite p1 & "NoCloseDragDropBands", 0, "REG_DWORD"
WshShell.RegDelete p1 & "NoMovingBands"
p1 = "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell"
WshShell.RegWrite p1, "explorer.exe", "REG_SZ"
p1 = "HKCU\Software\Microsoft\Internet Explorer\Explorer Bars\{32683183-48a0-441b-a342-7c2a440a9478}\"
WshShell.RegDelete p1 & "BarSize"
WshShell.RegWrite p1, "媒体区", "REG_SZ"
On Error Goto 0
For Each Process in GetObject("winmgmts:"). _
ExecQuery ("select * from Win32_Process where name='explorer.exe'")
Process.terminate(0)
Next
MsgBox "完成！" & vbcr & vbcr & "?Kelly Theriot and Doug Knox", 4096, "完成"
Else
MsgBox "没有对你的系统进行任何改变。" & vbcr & vbcr & "?Kelly Theriot and Doug Knox", 4096, "用户取消了"
End If
我这方法管用 才用祥镇过的 把下面东西建个文本文档 后缀.txt 改成.vbs
'xp_taskbar_desktop_fixall.vbs - Repairs the Taskbar when minimized programs don't show.
'?Kelly Theriot and Doug Knox - 8/22/2003
Set WSHShell = WScript.CreateObject("WScript.Shell")
Message = "To work correctly, the script will close" & vbCR
Message = Message & "and restart the Windows Explorer shell." & vbCR
Message = Message & "洞伏This will not harm your system." & vbCR & vbCR
Message = Message & "Continue?"
X = MsgBox(Message, vbYesNo, "Notice")
If X = 6 Then
On Error Resume Next
WshShell.RegDelete "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StuckRects2\"
WshShell.RegDelete "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\StreamMRU\"
WshShell.RegDelete "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Streams\Desktop\"
WshShell.RegDelete "HKCU\Software\Microsoft\Internet Explorer\Explorer Bars\{32683183-48a0-441b-a342-7c2a440a9478}\BarSize"
P1 = "HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\"
WshShell.RegWrite p1 & "NoBandCustomize", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoMovingBands", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoCloseDragDropBands", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSetTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoToolbarsOnTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSaveSettings",0,"REG_DWORD"
WshShell.RegWrite p1 & "NoToolbarsOnTaskbar", 0, "REG_DWORD"
WshShell.RegWrite p1 & "NoSetTaskbar",0,"REG_DWORD"
WshShell.RegWrite p1 & "NoActiveDesktop",0,"REG_DWORD"
WshShell.RegWrite p1 & "ClassicShell",0,"REG_DWORD"
p1 = "HKCU\Software\Microsoft\Windows\CurrentVersion\Group Policy Objects\LocalUser\Software\Microsoft\Windows\CurrentVersion\Policies\谨颤粗Explorer\"
WshShell.RegWrite p1 & "NoCloseDragDropBands", 0, "REG_DWORD"
WshShell.RegDelete p1 & "NoMovingBands"
p1 = "HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell"
WshShell.RegWrite p1, "explorer.exe", "REG_SZ"
p1 = "HKCU\Software\Microsoft\Internet Explorer\Explorer Bars\{32683183-48a0-441b-a342-7c2a440a9478}\"
WshShell.RegDelete p1 & "BarSize"
WshShell.RegWrite p1, "Media Band", "REG_SZ"
On Error Goto 0
For Each Process in GetObject("winmgmts:"). _
ExecQuery ("select * from Win32_Process where name='explorer.exe'")
Process.terminate(0)
Next
MsgBox "Finished." & vbcr & vbcr & "?Kelly Theriot and Doug Knox", 4096, "Done"
Else
MsgBox "No changes were made to your system." & vbcr & vbcr & "?Kelly Theriot and Doug Knox", 4096, "User Cancelled"
End If