The Majority Of Brexit's Impact On...
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No best answer has yet been selected by mohd khaleel. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Try running ScanDisk. You will find it in; Start / Programs / Accessories / System Tools.
It is pretty good at finding some problems and curing them. You should also try running a virus checker just in case you have downloaded a virus.
If you go to http://tinyurl.com/455j you can get a free on-line virus scan that will cure any viruses it finds.