подскажите, на ноуте asus k42f стоит видеокарта nVidia или нет

нет, на нем встроенная видеокарта Inlel HD Graphics 3000

Вот все предложения по модели Asus K42F
Processor & Cache Memory
Intel® Core™ i5 Processor 520M/430M : 2.4 GHz - 2.26 GHz, with Turbo Boost up to 2.93/2.53 GHz;
Intel® Core™ i3 Processor 350M : 2.26 GHz
Operating System
Genuine Windows® 7 Ultimate
Genuine Windows® 7 Professional
Genuine Windows® 7 Home Premium
Genuine Windows® 7 Home Basic
Chipset
Mobile Intel® HM55 Express Chipset
Main Memory
DDR3 1066 MHz SDRAM, 2 x SODIMM socket for expansion up to 8GB SDRAM
Display
14" HD (1366x768) LED backlit
Video Graphics & Memory
Integrated Intel® GMA HD
Hard Drive
640GB,5400rpm
500GB,5400rpm;7200rpm
320GB,5400rpm;7200rpm
250GB,5400rpm
Optical Drive
DVD Super Multi
Card Reader
3 in 1 card reader, SD,MMC,MS
Video Camera
VGA web camera (Fixed type)
Fax/Modem/LAN/WLAN
Integrated 802.11 b/g/n
LED Status Indicator
Power-on/Suspend
Battery Charging/full/low
Storage device access
Capital Lock
Wireless on status indicator
Interface
1 x Headphone-out jack
1 x VGA port/Mini D-sub 15-pin for external monitor
3 x USB 2.0 ports
1 x RJ45 LAN Jack for LAN insert
1 x HDMI
Audio
Built-in Azalia compliant audio chip, with 3D effect & full duplex
Built-in speaker and microphone
Altec Lansing® speakers
SRS Premium Sound
Keyboard
ASUS 302mm keyboard integrated Numeric keypad
19mm full size key pitch
Battery Pack & Life
48.84WHrs, 4400 mAh, 3S2P 6 cells battery pack
AC Adapter
Output: 19 V DC, 3.42 A, 65W
Input: 100-240 V AC, 50/60 Hz universal
Dimension & Weight
34.9 x 23.8 x 3.65 cm (W x D x H)
2.2 kg (with 6 cell battery)

Установи сибе AIDA64 и нет проблем что есть что нету
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Вроде обсуждалось тут, используй - WindowsFix

Советовали тут уже несколько раз, вот решение: