Hello
. I had a problem with my laptop and send him back in service. They replace my motherboard and my new graphic card is gt730m(gt 640m is old one). Problems occurred after a short period of time, ramdom artifacts and crashes. 2 blue screens 5 min away one from another. Plz help 

My Computer
At a glance
Win7 64biti5-3210m8 gb ddr3 667mhznvidia gt730m
- Computer type
- Laptop
- Computer Manufacturer/Model Number
- Acer aspire v3-571g
- OS
- Win7 64bit
- CPU
- i5-3210m
- Motherboard
- Acer VA50_HC_CR Type2
- Memory
- 8 gb ddr3 667mhz
- Graphics Card(s)
- nvidia gt730m
- Hard Drives
- TOSHIBAMQ01ABD075 750gb
- Antivirus
- avast
- Browser
- Chrome