Event 507 and 509 : don't worry, your hardware is not necessarily KO !

[Overnight]

If you got the following event ids 507 and 509, Windows suggests your hardware has a problem :
A request to read from the file "C:\...." at offset xxxxxxxx for xxxx bytes
succeeded, but took an abnormally long time (xxx seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

Just fix this : delete the following file and restart :
C:\Windows\SoftwareDistribution\DataStore\DataStore.edb