Video driver stopped responding and was recovered by Win 7

Windows 7 ultimate x64. Once a day, sometimes twice, the image on the monitor goes blank for 3-4 seconds and a notification appears: Error "The video driver stopped responding and was restored" We
bought a new system unit two months ago. Here are its Specifications:
CPU Intel Pentium G3250 3.2 GHz / 2core / SVGA HD Graphics / 0.5 + 3Mb / 53W / 5 GT / s LGA1150
GIGABYTE GA-H81M-S2V rev1.0 (RTL) LGA1150 PCI-E Dsub + DVI GbLAN SATA Mini -DTX 2DDR-3
Crucial DDR-III DIMM 8Gb CL11
Used only for office tasks (word, exel, 1c, surfing the Internet).
Drivers for intel hd graphics installed the latest, downloaded from the official site. The error did not help. I downloaded the program from support.microsoft.com (I found information on this problem) Fix it (program name). Launching it did not help either. At first I thought maybe the video memory is not enough, I put 1 GB in the BIOS. All the same, the problem was not solved. Help me figure out what could be the matter?