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What can you do, and can you not do?
Supply all the details you can come with.
Is it a laptop or a desktop computer?
What brand name and model is it, or if it's a generic system, what mboard make and model doesi t have?
99% of the time when people think it was Windows updates that caused their problems, it was caused by something else.
If you are bound and determined your problem was caused by Windows updates, in most cases you can use System Restore, if you have it enabled, in normal mode or in Safe mode, to load a previous restore point with a time and date before your symptoms first appeared and the problem will go away.
Sometimes you also have the option of un-installing the update(s) in Add/Remove Programs.
You can look up your Windows updates history - the list if updates that have been installed - on the Windows updates page on the Microsoft web site, and search on the web using the update number or specific description of the most recently installed ones. If others are having problems because of those updates, you will probably find "hits" about the problems they had on the web within a short time of the time when they were first released - if you don't find anything like that, your problem was probably NOT caused by the updates.
See the last 3 paragraphs of response 4,
and response 2 in this starting at
"The auto update should not have corrupted url.dll.
Something else may be wrong." :
Failing power supplies are common and can cause your symptoms.
Check your PS.
See response 4 in this: