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This sometimes happens with Windows installations - your user profile gets deleted or corrupted and this error message results. If you aren't into heavy computer software fixes, I would take it to a computer-savy friend, or a computer service provider. Here is one set of instructions to try and remedy the problem. You receive The User Profile Service failed the logon error message
Have you tried to boot in safe-mode? try f8 on boot up and when it ask what to do. load "last good profile that worked. Open up a command prompt from your recovery options and copy C:\Windows\System32\winevt\Logs\Application.evtx to an external disk. Get on another computer with Vista and open up Application.evtx with the Event Viewer. Find the error where SideBySide is the source in the event log and it should say something about an error in some manifest file. Now go back to your computer and replace that file on your C drive with a copy of that file from your recovery partition or recovery disk. Restart your computer and it should work.
You do not say which operating system you are using.
A blue screen can have many causes, so you need to undertake an elimination process to identify the cause.
Most importantly, do not repeatedly keep trying to boot if blue screen keeps appearing, as this could lead to hasrdware failure. It is important to identify and fix the fault as soon as possible.
If you read the full error message, there will usually be an indication of the likely cause of the crash as well as some suggested remedies.
Typical causes are:
Conflict with newly installed software Driver conflict or corruption Malware infection Insufficient Hard Drive space Operating system corruption Hard Drive fault Overheating Memory corruption Graphics card fault
Each of these will have a different remedy.
Start by studying the error message in more detail, try the suggested remedy options, then post again with more specific information, if necessary.
You have to make a new account on the computer to resolve this issue (Or a fresh format/factory reset). If you are able to log in at all, make a new account and move your data. Otherwise, factory reset might be the easiest solution. You can recover your data by removing the hard drive and using an external hard drive to usb cable if you are not able to log in at all.
Use the Function key or Delete key to stop the machine from booting all the way, in other words, interrupt the normal process. You can try to use the "restore to the last successful boot" selection. If that doesn't work, you can re-install Windows. What is happening is that windows wants to run the program to let you input the user/password selection and cannot start it. Maybe it cannot find it or the 'file got corrupted' standard Microsoft answer. Personally, if find that a horrible excuse. Computers are not supposed to corrupt files willy-nilly. Anyway, you likely have a hard drive dying slowly, and should back up any files you need from the machine ASAP, and then re-install windows. tom