Pc doesnt shut down

reinstall windows

What's your Windows currently?

Throw a brick at it

Check the startup programs and remove anything that isn't by Windows or related to your hardware manufacturer(s).

Type MSCONFIG into your start menu's search engine. Then just open up MSCONFIG and go to startup.

Maybe update your drivers from everything. Spyware, Mallware, Virus. Could be one of those. Had these problems sometimes too. Secunia PS does the job for your programs and driver genius for your drivers.

If this doesn't work maybe what you can do is take the same version W7 as installed and then make an upgrade, what will happen is your system files will be renewed all the other files will stay totally the same.

This was always my last seviour but before try the other stuff.

That's windows. Get used to it. They have been including self-destruct since the very beginning.

Format. Reinstall windows. Alternatively you could try defrag but format and reinstall is faster.

Have you tried unplugging it and then plugging it back in?

Hello, IT. Have you tried turning it off and... Oh wait, nevermind.

Clean the registry and all.
Get CCleaner.
Also defragement the drives.

The beggining of Skynet

well that's scary...

My guess would be that you have some program running in the background that doesn't shut down when windows tells it to.

Your computer has achieved consciousness, next time you go to bed you better hide a gun under your pillow just to be safe.

Have you tried to boot it in safe mode and try to shut it down in safe mode, if it is working then some 3rd party application might have interfere with your system files.

Really, people? Telling him to defrag his HD because his PC refuses to shut down?? -_-

90% sure it's some form of trojan / malware. It's either that, or some driver that refuses to unload / some program that refuses to close. As he's posting here, the chances that he's savvy enough to check his own running services, programs and the like are slim.

@ OP - your best bet is to install a good and up-to-date antivirus program such as AVG (most hassle-free for less techy users), along with Malwarebytes Anti-Malware and Spybot S&D. First, update all these programs' signatures, then run the antivirus program first, let it scan your whole PC, then run through a full scan with Malwarebytes, then Spybot. See what they turn up. It might also be smart to download and run Combofix.

Alternatively, you can forego all the time and effort you'd put into this and just re-install Windows all together. It would give you a nice fresh slate to start from - make sure to install good antivirus stuff first thing if you do, though.

Scan with Malwarebytes (it's free to download) then clean your PC with CCleaner.

Ctrl - Alt - Delete before shutting down. Then look at your running processes. Google any Processes that sound unfamiliar/fishy to you and maybe you will find some Program that halts your shutdown.

If not, then go and install Malwarebytes Antimalware and/or Spybot Search and Destroy. Let them run a check and see if anything comes up. If that doesn't work, then you might have to try windows repair or reinstall after saving your data.

press windows+r. type it like that "shutdown -f -t 0".

try it and tell me

Start cleaning up background processes...

Something isn't probably closing properly. Also try to close everything before shutting down...

You need to clean your PC. Maybe a new antivirus... use Microsoft Security Essencials its the best free AV.
Install TuneUp Utilities, run the One Click Maintenance, and should be enough :)

Have you tried turning it off and back on again?

also you tried Google, sounds like something needs repairing

Have you tried violence?

Maybe Windows can't close some process, check task manager and kill everything you can, except typical threads.

Maybe he reached a rebellious age, read a magazine on how to handle rebellious computers.