Hi, there. First, I'd like to thank you for your quick reply. Here's what I did:
In my Event viewer, System log I can see 4 cdrom errors "The device, \Device\CdRom2, has a bad block.", and 3 Removable Storage Service errors "RSM cannot manage library PhysicalDrive2. It encountered an unspecified error. This can be caused by a number of problems including, but not limited to, database corruption, failure communicating with the library, or insufficient system resources.", but this should be because windows cannot access a flash drive on my phone, I hope.
The cdrom2, was my virtual dvd, I guess, after I had mounted an image file, as I already have two physical dvd drives.
But I also had the couriosity to check the Application log. There I've seen a lot of errors. "WMI ADAP was unable to load the msdtcui.DLL performance library due to an unknown problem within the library: 0x0", and "The timeout waiting for the performance data collection function "PerfProc" in the "C:\WINNT\system32\perfproc.dll" Library to finish has expired. There may be a problem with this extensible counter or the service it is collecting data from or the system may have been very busy when this call was attempted." which is repeated over 50 times.
Tried Memtest but no errors, so I guess me SDRAM is OK.
No ideas left here...