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How long’s it been since you last rebooted Windows?

with 41 comments

If you’ve ever wondered just how long your PC has been continuously running without a reboot and you are using Windows NT, 2000, XP, Vista or 7, there are a couple of simple ways to obtain this information using tools built right into the OS.

Method 1: Windows NT/2000 and XP

Open up the command prompt (Start > Run > cmd > Enter/Ok). When the command prompt has loaded type “net stats srv” (or “net statistics server”). NT4 users (are there any, really?) need to download a special utility instead.



Method 2: Windows XP and beyond

Alternatively, you can use the command prompt to obtain system information, type “system info” which will also provide you with your PC’s uptime.



Method 3: Windows Vista and beyond

For those on Vista or Windows 7, things are a little easier (although the above will work just fine). Right click the taskbar and choose “Task Manager” or “Start Task Manager”. Head over to the “Performance” tab and on the bottom right of the window you ought to see your system uptime.


Also, should you so prefer, there are many other lightweight applications that will provide you with your system uptime. There’s a desktop gadget dedicated to that and here’s yet another alternative.

Feel free to share your current uptime in the comments below. Mine right now is at 47 hours, 51 minutes on Vista x64.

An updated version of this post and discussion can be found here.

Written by Matthew DeCarlo

January 22nd, 2009 at 7:05 am

41 Comments so far

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  1. My work machine has been up for 16 days, 5 hours 34 minutes and 39 seconds.

    My Home machine has been up for 1 month, 3 days, 4 hours, 19 minutes and 11 seconds.

    (I don’t like turning it off … sorry eco people)


    22 Jan 09 at 8:49 am

  2. System Up Time: 9 Days, 0 Hours, 33 Minutes, 58 Seconds
    That’s on my work machine, 2003 server sp2. It’s a laptop so has been suspended several times in that period.


    22 Jan 09 at 9:00 am

  3. 2 mins


    22 Jan 09 at 9:05 am

  4. Just built a new system with vista 64, but my old machine isnt green at all, 36 days 18 hours. Still kickin


    22 Jan 09 at 9:18 am

  5. About 30 seconds


    22 Jan 09 at 9:30 am

  6. Mine has been up for 2 days, 4 hours and 22 minutes on Windows 7 x64

    Jose Vilches

    22 Jan 09 at 9:47 am

  7. 82 hours 34 minutes (vista 64-bits)


    22 Jan 09 at 10:01 am

  8. I’m at 152 hours and 40 minutes (or 6.33 days), another interesting fact is checking via my local area connection status I have Sent 42,736,701,139 and received 30,115,510,251 Bytes of data and counting but these are constantly increasing at a rate that makes it hard to take an actual readout they have both increased by at least a MB already. I’ve had up times in the months thought until an automatic update causes a system reboot on its own.


    22 Jan 09 at 10:16 am

  9. I personally leave all my computers on as much as I can. Electronic components expand when they warm up(on) and contract when they cool down(off). It has been proven electronics (non mechanical) are more likely to fail when they are first powered on, then any other time. So if you leave your computer on the less likely it will fail….


    22 Jan 09 at 10:35 am

  10. I do tech support, and we have a remote access tool that shows all kinds of stats on the machine we’re connected to, one of them being uptime. I’ll frequently see XP workstations with ~1 week uptime, most office workers reboot their workstations once a week. But the other day I saw one with about 98 DAYS uptime. I was surprised, to say the least. Even more surprising was that the user wasn’t having any problems, he just had a program usage question. I mean, XP is actually pretty stable when you know what you’re doing, but your average office worker stuffs all kinds of crap into their machines and they’re lucky they stay up at all. This was a refreshing change.


    22 Jan 09 at 10:42 am

  11. Here in the office we have several computers that run 2000 / XP and some have been up and running without a reboot for around 5 to 6 months at a time.


    22 Jan 09 at 11:28 am

  12. One hour, fourteen minutes. I shut it off every night. Rebooting is actually a healthy thing for Windows and I’ve never understood the pride some people take in a constipated computer…

    Black Cat

    22 Jan 09 at 12:12 pm

  13. Linux resets the counter when it reaches 497 days.

    BSD does not reset the counter and many have uptimes in the years.

    Current versions of Windows are more stable then the past, but the uptimes do not represent there actual stability because you often have to reboot after installing software.

    Fred Williams

    22 Jan 09 at 12:18 pm

  14. Well, of the 4 computers I use on a daily basis, only 1 of them runs Windows, and I only boot it up when I am going to use it – the machine I run games on. I shut it off every night, because it consumes a lot of power.

    My laptop, my workstation at work and my media center, which normally stay on 24/7. Here is my workstation.

    Workstation: 10:03:35 up 69 days, 32 min, 1 user, load average: 0.51, 0.74, 0.68

    In response to Black Cat, he is wrong, Linux does not reset the uptime after 497 days. That was a very old kernel bug that was fixed years ago. As proof, here is the uptime on one of my servers:

    web01 ~ # uptime
    10:04:25 up 923 days, 20:19, 1 user, load average: 0.58, 0.57, 0.55


    22 Jan 09 at 1:06 pm

  15. This is how long my computer has been up but I just did a reboot yesterday. My computer is usually up for weeks at a time without a reboot. I only reboot when I start getting performance issues or after a Microsoft update that requires a reboot.

    System Up Time: 0 Days, 16 Hours, 8 Minutes, 50 Seconds


    22 Jan 09 at 1:16 pm

  16. Thanks Justin.

    I read an outdated article. How could google fail me?

    Fred Williams

    22 Jan 09 at 1:50 pm

  17. I just use my aim account and have my id as a friend and it tells me. The longest Ive had vista up is 18 days 12 hours. It would have been longer but aim crashed on me :) I don’t know why people hate vista so much but its been great for me.


    22 Jan 09 at 4:32 pm

  18. I work online on my Vista 32 only 3 days (36 hours) no more time possibility, after i go to sleep.


    22 Jan 09 at 8:15 pm

  19. Well, 45 minutes. I shut my computer down, put it in sleep mode or set it to hibernation when I’m away. It’s not running many hours a day, AND NO, IT NEVER CAUSED ME ANY HARDWARE PROBLEMS TO DO SO, NOR ANY OF THE COMPUTERS I’VE HAD IN THE LAST 15 YEARS.

    All my old hardware (PSUs, HDDs included) was still working perfectly after over 13 years, until I recycled the lot as it was useless to keep 486 and Pentium parts in my drawers.

    In fact letting your computer running all the time causes wear on :
    -Fan bearings. Especially the cheap GPU sleeve fans (All my video cards I’m not the original owner of have worn bearings)
    -HDD bearings.
    -Capacitors, which have a rated life of about 2000 hours at max. temp (means about 16k hours/ <2 years for 85°C caps at computer temperatures)
    -Your wallet : Recent high-end systems use about 120W idling (not counting monitor, idling speakers amp), which translates to around $120/year at the average US $0.11/kWh cost.

    [quote]It has been proven electronics (non mechanical) are more likely to fail when they are first powered on, then any other time.[/quote]
    Light bulbs are electric, not electronic. If the equipment does not turn on correctly, it means there is a problem with it’s power supply, or any rails-associated components. Sure, if you leave your equipment on, you’re just hiding that it’s PSU can’t handle current peaks anymore, but the best way to cause problems is by leaving the equipment on.

    The capacitors’ and silicon’s greatest enemy is heat. A good capacitor can last over 20 years at room temps, but it’s life diminishes greatly even with small temperature increases. Silicon can last forever, unless it was poorly manufactured (many early 70s chips), or damaged by heat or overvoltage (not necessarily instant damage, it can take a few years.)


    22 Jan 09 at 9:19 pm

  20. I’m donating my computer for science. If I’m not gaming I am running folding@home and Seti@home. So its ok. I upgrade every 3 years so wear and tear is not much of an issue for me. I got to have the latest and greatest video card to keep up with the current video game at the time. :)


    23 Jan 09 at 12:45 am

  21. Damn that stupid windows update. Annoyed me till i restarted. So my timer says 5min 17sec as of now! Before that i ran it for abt 3days.


    23 Jan 09 at 1:21 am

  22. I always turn mine off when I am through with it. I do this because my dad is always concerned about the electricity bill.

    The longest mine has been on was 16 hrs of me playing CS:S and HL2 with a little offline Diablo 2 thrown in. I wish I had a life back then.

    Mopar man

    23 Jan 09 at 9:47 am

  23. Justin; Actually the 497 days is still common on some Linux distros
    The previous Techspot server timed over to zero twice =)

    My max on a Windows machine was a bit over 497 days (Win2K Server) It did time over to zero aswell, it crashed a few days later tho… Hardlock…

    I recommend uptime.exe for all Windows OS pre Vista, much easier to read than those other commands…
    It can also read remote systems you have access too…

    Per Hansson

    23 Jan 09 at 12:49 pm

  24. I am disgusted at the number of people who do not turn off their PCs when they are not being used.
    Unfortunately the myth of turning a machine on and off causing it to fail seems to have caught the imagination. In truth the life of electronic components is shortened far more by being kept constantly warm, and as meeeee says wear in fan and disk bearings is increased.
    A heavily used PC is unlikely to be used for more than 30% of the time and to leave it running and burning electricity for the remaining 70% is totally unacceptable in the current climate of global damage. I suspect that the majority of these people come from the US where turning anything off seems to be regarded with horror.


    23 Jan 09 at 1:02 pm

  25. 9 days on my XP PRO. Personal Record was 122 days on a w2k3 server which was restarted by a power fault.

    @Per Hansson / uptime it’s an ok tool but only available in NT4 / W2K Resource Kit.

    Majority of system info tools get uptime data via WMI by interrogating Win32_OperatingSystem object.


    23 Jan 09 at 3:03 pm

  26. Since install: 8 days 4 hrs 2 min 27 seconds
    Install: 1/16


    24 Jan 09 at 12:31 am

  27. This isn’t an environmental debate, this is win-up-time. Troll somewhere else.

    Work uptime: 8 days, 16 hours~ (It was last rebooted due to security updates).

    Home uptime: 18 days, 14 hours~ (It was last rebooted due to security updates).


    28 Jan 09 at 1:19 pm

  28. Someone doing a statistical survey?

    I have three machines running since I am somewhat of a power user and am always doing about 46 things at once.

    Oldest IBM Small Business Machine: 14 days, 10.5 hours
    Dad’s Custom PC boomerang
    back to me
    (he never learned how to use it): 6 days, 36 minutes
    Newest built PC to the family: 14 days, 7.5 hours

    You caught me in the middle as I usually only reboot my machines every 3-4 weeks except when I am installing something requiring reboot. I usually shut everything down though if I am going to be gone for more than 48 hours.

    My longest up time I am guessing was probably somewhere between more than 8 weeks and less than 10 weeks.

    To Alex: You are evidently doing some kind of music sharing or file sharing. Your machine was up for around 6.5 days having received 42 G bits sent and 30 received, my newest machine was up for 14 days and net traffic was 71 M bits sent and 979 M bits received.

    To Ryan: I agree. I have heard many times that expansion and contraction of the booting process is rough on electronic components which is one reason I leave mine on until it makes sense to reboot for a specific reason. Although I have always wondered if the extra spinning of the HD during the hours when you are sleeping or out to a movie would shorten the life of the bearings and or motor bushings.

    Dave and John: 98 days ….wow. 5-6 months ..double capitol WOW.
    Justin, 923? You win.
    I always heard that Windows does not manage ram very well when opening and closing programs over a period of time and never really gets defragged until a reboot.

    Black Cat: Healthy thing for Windows to reboot? How do you figure this? Could it be that your saying this because Windows is such a poorly designed OS to begin with that is appears that it runs better after a reboot and that people that do not know how to keep their machine clean and fix the occasional problem (say, the pc running slow) without the quick, easy reboot? Keep it clean and running smooth and it will not get constipated. I would suggest the ‘Dummies book to PC Laxatives’.

    To Steve: You shouldn’t have to reboot due to performance issues stemming from a PC being ON for several days at a time, I would suggest that the problem may be with the PC Administrator …..oh that is probably you, sorry.


    29 Jan 09 at 3:30 pm

  29. I have some old Trash 80’s that have been continually left on for years (not running windows obviously, lol), a 286 and a 386 that both sit humming nicely on 3.11, 4 486’s, 2 on slackware, 1 on win95 and 1 on a modded xp install, several p1/6×86/k5 systems that run various OS’s, 2 multi core AMD based desktops, one on VISTA and one on XP and 4 notebooks, 1 on XP PRO and 3 on VISTA PREMIUM that are ALL left on 24/7. In addition, I have 8 webservers that stay on all the time, running on REDHAT ENTERPRISE (of course they are located in datacenters). I’ve never had a problem with excessive failures from leaving my systems up and running. Of course, I keep my house at around 50 degrees F and I do blow the dust out occassionally. The notebook I’m using right now has been up and running for just over 768 hours. Yes, I know I’m using electricity. But, I don’t buy into the whole CO2 argument and I’m not particularly worried. Best wishes to all.


    25 May 09 at 5:20 pm

  30. I leave mine ‘up’ typically for up to a month, until either I do something stupid and crash it or MS puts an update through. I put it into standby overnight though, as that uses barely any more energy than off but still plugged in. I often wonder, which takes more energy, suspending to RAM or hibernating/shutting down and letting the HDD grind away, using power, not to mention the extra tea usage.


    7 Aug 09 at 4:53 am

  31. 356 days, 3 hours and 22 seconds :D


    27 Sep 09 at 11:49 pm

  32. Oh wow! I feel bad now. Mine has been up for over 3 weeks. All the environmental energy savers are going to be mad at this article. I guess I am not as bad as bathy above me though. 1 year! That is absurd.

  33. 15:07:43 here, Custom built, Ubuntu Karmic based [AMD64].

    I don’t see how uptime values can be seen as stability counters. Something like that is entirely up to the usage of the machine.

    Also, for the eco-trolls, for your statements to be valid, you must compare also with our usage/load statistics, which most here are not disclosing. If we use the machines only 30% of the time, then so be it, but if we use it as a server or similar, then turning it off can be counter-productive.

    btw, mine are “0.00, 0.00, 0.00″, it’s been a boring 15 hours :/


    29 Jan 10 at 9:07 pm

  34. what the approximate uptime to restart a wondows server?

    Asif Murtazah

    15 Feb 10 at 6:25 am

  35. Gateway 960, Dual Xeon 2.4 Ghz, 1.5GB RAM running (gasp!!) Windows Server 2003…uptime reads..

    315 days 13 hours 14 minutes 1 second as of 05/08/09.
    this is the maximum what i have achieved till now in my experience of 8 years.
    But my experience told me for efficient working of a sever it must get a restart once in every 6 months(180 days)

    Gaurav Agarwal

    15 Feb 10 at 6:40 am

  36. Yes , gaurav is right.
    for efficient working of a sever it must get a reboot once in every 6 months.


    17 Feb 10 at 6:04 am

  37. About 12 days on my home server. (I had to restart it to add some hardware and finish updates. Before restart it was at 169 days, running recycled Win XP PRO)
    On my workstation/gaming machine I rarely get more than 12 hours.


    23 Feb 10 at 4:02 pm

  38. My 386 has been up for about 14 years and never required a shutdown. beat THAT!


    13 Aug 10 at 3:37 pm

  39. I threw windows 2000 on my old dell from ’99 awhile back (P3 866 Mhz, 386 MB Ram) Almost hit a year, while staying quite active as a server.

    I’m quite proud of the old gal :) especially seeing how its all stock, and its been quite a warm summer, with only the CPU & PSU fans running.


    23 Aug 10 at 2:59 am

  40. systeminfo didn’t work on either of my xp machines
    -Not regognized as aninternal or external command-


    24 Aug 10 at 1:59 pm

  41. Maxx, either you have the most dependable power grid in the world, or I’m calling BS. 14 years is a little too much to believe.

    I used to keep my system on for months at a time without rebooting, though now I shutdown every night. Since I started doing nightly shutdowns, my electricity bill has dropped about $65/month.

    My current uptime is 16hrs, 23 minutes, 15 seconds


    25 Sep 10 at 1:27 am

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