at 07:45 shutdown -s

Here is the way to shutdown pc on daily basis

1- Start Menu>> All Programs>> Accessories>> System Tools>> Shedule Tasks

2- Go to file menu and click Schedule Task

3- You will find 3 tabs, first one is "Task" , here in run type " shutdown -s " In "Run As"
type
" NT AUTHORITY\SYSTEM "

4- In "Schedule" tab, set your required schedule and press ok, If it ask for password just
click ok.

To Access… Run Command

Accessibility Controls access.cpl
Accessibility Wizard accwiz
Add Hardware Wizard hdwwiz.cpl
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Adobe Acrobat (if installed) acrobat
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Command Prompt cmd
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Display Properties (w/Appearance Tab Preselected) control color
Dr. Watson System Troubleshooting Utility drwtsn32
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Free Cell Card Game freecell
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Group Policy Editor (XP Prof) gpedit.msc
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HyperTerminal hypertrm
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IP Configuration (Release All Connections) ipconfig /release
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Java Control Panel (if installed) javaws
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Microsoft Access (if installed) msaccess
Microsoft Chat winchat
Microsoft Excel (if installed) excel
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Microsoft Movie Maker moviemk
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Netmeeting conf
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Network Connections ncpa.cpl
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ODBC Data Source Administrator odbccp32.cpl
On Screen Keyboard osk
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Outlook Express msimn
Paint pbrush
Password Properties password.cpl
Performance Monitor perfmon.msc
Performance Monitor perfmon
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Phone Dialer dialer
Pinball Game pinball
Power Configuration powercfg.cpl
Printers and Faxes control printers
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Private Character Editor eudcedit
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Regional Settings intl.cpl
Registry Editor regedit
Registry Editor regedit32
Remote Access Phonebook rasphone
Remote Desktop mstsc
Removable Storage ntmsmgr.msc
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Resultant Set of Policy (XP Prof) rsop.msc
Scanners and Cameras sticpl.cpl
Scheduled Tasks control schedtasks
Security Center wscui.cpl
Services services.msc
Shared Folders fsmgmt.msc
Shuts Down Windows shutdown
Sounds and Audio mmsys.cpl
Spider Solitare Card Game spider
SQL Client Configuration cliconfg
System Configuration Editor sysedit
System Configuration Utility msconfig
System File Checker Utility (Scan Immediately) sfc /scannow
System File Checker Utility (Scan Once At The Next Boot) sfc /scanonce
System File Checker Utility (Scan On Every Boot) sfc /scanboot
System File Checker Utility (Return Scan Setting To Default) sfc /revert
System File Checker Utility (Purge File Cache) sfc /purgecache
System File Checker Utility (Sets Cache Size to size x) sfc /cachesize=x
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System Properties sysdm.cpl
Task Manager taskmgr
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Windows Explorer explorer
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Windows Magnifier magnify
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Windows Media Player wmplayer
Windows Messenger msmsgs
Windows Picture Import Wizard (need camera connected) wiaacmgr
Windows System Security Tool syskey
Windows Update Launches wupdmgr
Windows Version (to show which version of windows) winver
Windows XP Tour Wizard tourstart
Wordpad write