James Dunne's injury-time goal gave Stevenage their first points of the season at the expense of Notts County.
Boro had lost their first three league matches of the season, but won it when Dunne finished from close range after good work from Robin Shroot.
Striker Shroot looked lively throughout and came close to breaking the deadlock when he forced two saves from home keeper Bartosz Bialkowski.
The hosts hardly threatened and have just one point from four games.
Stevenage manager Graham Westley told BBC Three Counties Radio:
"We won't get carried away with winning in the sense that we know it was a weakened side from their point of view.
"We put in a solid away performance, we made it our business to grind it out.
"I thought we were solid and strong, it was a typical Stevenage performance away from home.
"It's good for the whole camp to get those first three points under our belt and we can build from that"
Notts County 01 Bialkowski 02 Dumbuya 04 Liddle 05 Smith 25 Tempest 08 McGregor 11 Bell (Nangel - 87' ) 16 Labadie 22 Fotheringham Booked 14 Coombes (Balmy - 72' Booked ) 15 Arquin Substitutes 23 Speiss 20 Campbell-Ryce 21 Thompson 28 Boucaud 17 Waite 27 Balmy 31 Nangel Stevenage 16 Day 05 Ashton 20 Smith (Heslop - 53' ) 22 Gray Booked 29 Hartley 08 Dunne 15 Freeman (Tounkara - 72' ) 24 Doughty (Tansey - 90' ) 34 Deacon Booked 09 Charles Booked 32 Shroot Substitutes 01 Arnold 06 Jones 23 Lopez 14 Heslop 17 Tansey 10 Burrow 21 Tounkara