Hello,
Not necessarily, even though you have a fresh and clean pc, there are trojans/malware/spyware out there that attack and manipulate the router. Most if not all can cleaned by resetting the router. Check you router manual on how to reset it. I wouldn't make any online purchases until it is done so.
Will it be safe to purchase things on my laptop?
Hmm, never heard of the such considering alot of routers use a linux/unix based subsystem, simply put... routers dont get viruses. If its a new pc then you should be fine, just recommend having yourself an antivirus installed(Avira and AVG are free, For paid Kaspersky and NOD32 are excellent) so you dont get future viruses and you should be fine![]()