lost windows 7 password: what can I do to log in?

Dear all,
I forgot my windows 7 Administrator password and I have not had done the recovery disk in advance . I tried to log in in the safe mode using administrator a and blank as password but it did not work: it says that account was disabled. I tried to use some usb boot software but I cannot digit the F2 anf F8 keyword on time therefore the usb boot do not work. I tried also to force from the preferences the USB boot disabling the HD ones but it does not work.
Does anybody knows how to trick that bloody windows system? I am using Parallels 9, build 13Fd 9.0.24251 on Mavericks 10.9.5 build 13F34.

(Revision 1052177; Thursday, August 28, 2014)

 

Hi PaolaB1,

Please follow the steps as suggested at http://kb.parallels.com/114193 which may help you in resolving the issue.

 

GREAT!!!! thanks a lot!! : it worked neatly
cheers, paola

 

I have Parallels 10, tried the advice in Article 114193 and got the following:
"Unable to open new session in this virtual machine. Make sure the latest version of Parallels Tools is installed in this virtual machine and it has finished booting."
Advice?