are you sure your drive is in PIO mode?
The method to find out should be the same as in Vista: http://club.myce.com/f61/troubleshooting-enabling-checking-dma-windows-vista-xp-2000-me-9x-101616/ provided, MS standard drivers for the controllers are used and the Sata controller your drive is connected to is in IDE mode. (I am assuming your drive is Sata since this is a brand new laptop).
[li] what time is needed for reading?[/li][li] what time is needed for conversion?[/li][li] what time is needed for burning? Since you are using ImgBurn, the log is helpful for this.[/li][/ul]
What I can think of additionally:
[li]Your drive simply has difficulties to read that disc (perhaps due to poor reading performance). You may run a transfer rate test with a Data DVD.[/li][li]Sata controller drivers issues[/li][li]Compatibilities of your software with Win7[/li][/ul]