These are the problem descriptions.It's showing as blue screen error but i can't see any blue screen

.It's actually a vertical and horizontal lines with many mixed colors.!
Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional information about the problem:
BCCode: 116
BCP1: FFFFFA8002CE54E0
BCP2: FFFFF88003F8EC98
BCP3: 0000000000000000
BCP4: 0000000000000002
OS Version: 6_1_7601
Service Pack: 1_0
Product: 256_1
Files that help describe the problem:
C:\Windows\Minidump\101111-16988-01.dmp
C:\Users\DELL\AppData\Local\Temp\WER-412123-0.sysdata.xml
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C:\Windows\system32\en-US\erofflps.txt
system specifications:
windows 7 ultimate x64 bit, original OS, OEM- Pre installed,hardware and software age:1 and half years.
I am also attaching the .rar files. please help me out

, i tried to update
drivers but its saying that already best
driver installed.