I need a fax solution. Can you help?

So, my all-in-one printer, which had faxing capability, died last night. I do still have an older all-in-one that I can use temporarily while I decide how much $$ I can afford for a new printer at this time. This older printer can scan but cannot fax.

So I’m wondering if you can recommend a free faxing software that I can install on my Windows 7 laptop. Alternatively, a free fax service on the web would also do as a stopgap measure.

Any suggestions?