I would wait until you have it running windows and the do the following.
1. Install AVG anti virus software, update it and do a full system scan click here
2. Install adaware se click here and do a full system scan and remove any malware detected
3. Install spywareblaster and enable all protection, update it and enable all protection again click here
If you have problems installing avg there are standalone virus checkers like stinger click here you can download and run
or alternatively you could do an online virus scan click here
That's a start - post back results