BSOD WIN 7 Shutdown when idle

When the computer is left on with or without lid closed instead of sleeping the computer has to be rebooted ie. won't wake by pressing KB or mouse
HP Pavillion dv7
64 bit Win 7
4.00 gb RAM
Brand new (< two weeks old)



Get this error message at start-up
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 9f
BCP1: 0000000000000003
BCP2: FFFFFA80042C9060
BCP3: FFFFF80000B9C518
BCP4: FFFFFA8003F44010
OS Version: 6_1_7600
Service Pack: 0_0
Product: 768_1


Can you suggest some solution

__________________
fashion bug coupon codes