Readyboost installed (windows 7)

[planteski]

With my USB key connected. Get missing operating system on system restart.
Thanks

 

[bryonhowley]

It sounds like your system is trying to boot from the USB stick. You need to go into your BIOS and set the boot drive to your HDD or SDD witch ever one you use as your boot drive. Some system are set to boot from the USB or CD/DVD first if inserted so that will need to be changed.

 

[Hawkeye22]

Did you delete any files from the USB key without turning readyboost off first? If so, windows is probably still looking for files on this USB key.

http://windows.microsoft.com/en-ca/windows7/turn-readyboost-on-or-off-for-a-storage-device

 

[planteski]

It sounds like your system is trying to boot from the USB stick. You need to go into your BIOS and set the boot drive to your HDD or SDD witch ever one you use as your boot drive. Some system are set to boot from the USB or CD/DVD first if inserted so that will need to be changed.

You're right.
I have a Lenovo Ideacenter B540. Would you know ho to change the boot drive?
Thanks