It seems as if Windows Update has caused a system failure of a critical system component. If you have a Window cd, try placing it in your cd drive and booting up. Then try to run a repair install. This may allow you to backup files. I would then recommend a full reinstall of windows.
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Before shutting down your system click on any programs still running and shut them down. This will cut the time for normal shut down to take place.
You could also run a hard drive diagnostic to see if it has any errors. There might be some if you don't let the computer shut down itself. Restarting can also cause the programs to become corrupt, if they didn't shut down right. Running a defrag on the drive will also help it shut down quicker.
Look on the net also for information on getting your PC to shut down quicker.
hmmm.. seems had a problem directly on the hardware side of your computer. my only and good recommendations to you is, first, check if your packard bell desktop has or still have a Warranty, if its on warranty, you can go to the service center to check the hardware of your PC. Second, if your computer is Out of Warranty you can check it by your self, open your CPU Drive, clean the dust inside the Hardware then check everything if all the wire's are still INTACT to each other.
Thus far you did well however I believe since I had experienced the same issue with my computer shutting on and off as well. I went and bought some Heat Sink Paste and redid the CPU top and walla no more issue with computer shutting down. You may wish to give this a go. It worked for me. $4.00 fix. Thought I would suggest it. .John
When this happens, you either have a hardware or bios problem. First thing to try is to start your computer and hit the F2 key to go into setup. This will be your BIOS, or Basic Input and Output Settings. You can go thru the tabs and see if you hard drive is recognized. Look under IDE configuration. If your hard drive is listed properly, then you motherboard is seeing your hard drive.
Then, go to the tab on the far right and look for reset bios or load system defaults. Sometimes, this will help you get by this problem.
If this does not make any changes, start your comptuer and hit the F8 key this time. This should give you a menu including start in safe mode, start in Last known good configuration. Try selecting last known good configuration and see if this works. If not, try starting in Safe mode.
IF none of this will work, then you probably have a hardware problem. Shut your computer down and open your case. Unplug every drive EXCEPT the hard drive. Try to start the computer. If this works, the shut the computer down and plug in one drive as a time until th computer will not start again. When this happens, you have found the bad drive. A CD or Floppy drive that goes bad will sometimes stop the computer from starting.
Try these suggestions and see if you can get past this. If you find this provides a solution for you, please remember to leave positive feedback for me.
With limited information, this could be many things, however, I can try to explain what is happening.
The computer runs several tests before it boots. This process is called POST (power on self test). During POST, all critical systems are analyzed, albeit a short test. When the system comes to something that does not pass the test, it usually puts up a warning allowing you to either continue or shut down and fix it.
Sometimes, it comes to a test that creates a "loop" of instructions for the computer. When a loop happens, the computer does the same thing over and over and cannot stop.
A loop can occur during POST if an instruction is not followed correctly. The most common cause for this in your type of computer is a problem with either the boot sector on the hard drive or the hard drive itself.
Try disconnecting the hard drive and boot to a floppy or a cd. If the computer boots, you know where your trouble is.
If on the other hand, with the hard drive disconnected and the same problem occurs, change your memory to fix the problem.
It sounds like the heads that read your hard drive are deteriorating. If you have data that you need on the hard drive hook it up as a slave drive to another computer and save your data now. Because eventually you will no longer be able to access any data on the drive. Then you will have to send it to one of those data recovery places that use clean rooms to recover your data. That will be very expensive.
Or you might have a bad sector in bios. In that case, I am not sure what to do.
is there a post beep when the pc is switched on. check the memory if it is a beep beep beep sound , also disconect the hard drive, dvd drive, floppy, and any usb devices and see if it boots up. if that fails it does seem like the mother board, also check the cpu fan has it stoped. also find out the power switch conector on the mother board, from the base unit switch to the mother board. also chech the power connector from the power supply to the mother board , on newer boards there are two that go to the mother board its self , a big one and a very small one .