A. Windows XP and later include the systeminfo utility. When executed, it shows a lot of information about your system, including the system's boot time. When I ran the utility, I saw:

                              Host Name: SAVDALWKS01                              OS Name: Microsoft Windows 7 Ultimate                              OS Version: 6.1.7600 N/A Build 7600                              OS Manufacturer: Microsoft Corporation                              OS Configuration: Member Workstation                              OS Build Type: Multiprocessor Free                              Registered Owner: localadmin                              Registered Organization:                              Product ID: 00426-065-0254163-86023                              Original Install Date: 8/7/2009, 11:22:13 AM                              System Boot Time: 1/27/2010, 3:16:34 AM                              System Manufacturer: OEM                              System Model: OEM                              System Type: x64-based PC                              Processor(s): 1 Processor(s) Installed.                              \[01\]: Intel64 Family 6 Model 26 Stepping 5 GenuineIntel ~2106 Mhz                              BIOS Version: Phoenix Technologies, LTD 6.00 PG, 11/25/2009                              Windows Directory: C:\Windows                              System Directory: C:\Windows\system32                              

(Text bolded for emphasis)

In Windows Vista and later, you can also launch Task Manager. Up time is displayed at the bottom right of the Performance tab.

Click to expand.

There are other, longer ways to check the up time. You can check when key services, such as the workstation or server services, were started using the commands

                              net statistics server                              

or

                              net statistics workstation                              

and looking at the second line, which displays the date the services started (the time of the boot), as shown here.

                              Workstation Statistics for \\SAVDALWKS01                              Statistics since 1/27/2010 3:16:56 AM                              Bytes received 3823054                              Server Message Blocks (SMBs) received 12340                              Bytes transmitted 22773081                              Server Message Blocks (SMBs) transmitted 12362                              


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