Lenovo ThinkPad L440 User Manual

•Problem:Thescreenisblank.
Solution:Dothefollowing:
–PressF7tobringuptheimage.
–Ifyouareusingtheacpoweradapter,orusingthebatteryandthebattery-statusiconshowsthatthe
batteryisnotdepleted,pressF6tomakethescreenbrighter.
–Ifyourcomputerisinsleepmode,presspowerbuttontoresumefromthesleepmode.
–Iftheproblempersists,followthesolutionforthefollowingproblem.
•Problem:Incorrectcharactersaredisplayedonthescreen.
Solution:Didyouinstalltheoperatingsystemorprogramcorrectly?Iftheyareinstalledandconfigured
correctly,havethecomputerserviced.
•Problem:Thescreenstaysonevenafteryouturnoffyourcomputer.
Solution:Pressandholdthepowerbuttonforfoursecondsormoretoturnoffyourcomputer;then
turnitonagain.
•Problem:Missing,discolored,orbrightdotsappearonthescreeneverytimeyouturnonyourcomputer.
Solution:ThisisanintrinsiccharacteristicoftheTFTtechnology.Yourcomputerdisplaycontains
multiplethin-filmtransistors(TFTs).Asmallnumberofmissing,discolored,orbrightdotsonthescreen
mightexistallthetime.
Externalmonitorproblems
•Problem:Theexternalmonitorisblank.
Solution:Tobringuptheimage,pressF7andselectthedesiredmonitor.Iftheproblempersists,do
thefollowing:
1.Connecttheexternalmonitortoanothercomputertomakesurethatitworks.
2.Reconnecttheexternalmonitortoyourcomputer.
3.Refertothemanualshippedwiththeexternalmonitortochecktheresolutionsandrefreshratesthat
aresupported.
–Iftheexternalmonitorsupportsthesameresolutionasthecomputerdisplayorahigherresolution,
viewoutputontheexternalmonitororonboththeexternalmonitorandthecomputerdisplay.
–Iftheexternalmonitorsupportsalowerresolutionthanthecomputerdisplay,viewoutputonthe
externalmonitoronly.(Ifyouviewoutputonboththecomputerdisplayandtheexternalmonitor,
theexternalmonitorscreenwillbeblankordistorted.)
•Problem:Youcannotsetahigherresolutionthanthepresentoneonyourexternalmonitor.
Solution:Makesurethatthemonitortypeandotherinformationiscorrect.Ifnecessary,updatethe
monitordriver.
•Problem:Thescreenisunreadableordistorted.
Solution:Makesurethat:
–Themonitorinformationiscorrectandtheappropriatemonitortypeisselected.Refertothesolution
totheaboveproblem.
–Makesurethatanappropriaterefreshrateisselectedbydoingthefollowing:
1.Connecttheexternalmonitortothemonitorconnector,andthenconnectthemonitortoan
electricaloutlet.
2.Turnontheexternalmonitorandthecomputer.
3.Right-clickonthedesktopanddothefollowing:
–ForWindows7,Windows8,andWindows8.1:ClickScreenresolution.
Chapter8.Troubleshootingcomputerproblems101

Lenovo ThinkPad L440 Specifications

General

Form factor	Clamshell
Product type	Laptop
Product color	Black
Housing material	Polycarbonate (PC)
Bus type	DMI2
Tjunction	100 °C
Processor cache	3 MB
Processor cores	2
Processor model	i5-4330M
System bus rate	5 GT/s
Processor family	Intel® Core™ i5
Processor series	Intel Core i5-4300 Mobile series
Processor socket	-
Processor threads	4
Processor codename	Haswell
Processor frequency	2.8 GHz
Processor cache type	Smart Cache
Processor lithography	22 nm
Processor manufacturer	Intel
Processor front side bus	- MHz
PCI Express slots version	3.0
Processor boost frequency	3.5 GHz
Processor operating modes	64-bit
ECC supported by processor	No
PCI Express configurations	1x16, 2x8, 1x8+2x4
Thermal Design Power (TDP)	37 W
Maximum number of PCI Express lanes	16
Motherboard chipset	Intel® QM87
Memory slots	2x SO-DIMM
Internal memory	4 GB
Memory clock speed	1600 MHz
Memory form factor	SO-DIMM
Internal memory type	DDR3L-SDRAM
Maximum internal memory	16 GB
Memory layout (slots x size)	1 x 4 GB
SSD capacity	The Solid State Drive's storage capacity in Gigabytes.
SSD interface	SATA III
Storage media	SSD
Optical drive type	DVD±RW
Card reader integrated	Yes
Total storage capacity	128 GB
Compatible memory cards	MMC, SD, SDHC, SDXC
Number of SSDs installed	1
HD type	Not supported
Display diagonal	14 \
Display brightness	200 cd/m²
Display resolution	1366 x 768 pixels
Native aspect ratio	16:9
Contrast ratio (typical)	500:1
On-board graphics card ID	0x416
Discrete graphics card model	Not available
On-board graphics card model	Intel® HD Graphics 4600
On-board graphics card family	Intel® HD Graphics
Maximum on-board graphics card memory	1.74 GB
On-board graphics card base frequency	400 MHz
On-board graphics card DirectX version	11.1
On-board graphics card dynamic frequency (max)	1250 MHz
Intel segment tagging	Home Office, Small Business
Audio system	HD
Speaker power	2 W
Front camera resolution	1280 x 720 pixels
Wi-Fi standards	802.11a, 802.11b, 802.11g
Bluetooth version	4.0
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Charging port type	DC-in jack
USB 2.0 ports quantity	3
eSATA/USB 2.0 ports quantity	0
Pointing device	ThinkPad UltraNav
Operating system installed	Windows 7 Professional
Processor ARK ID	76750
Intel TSX-NI version	0.00
Processor package size	37.5 x 37.5 x 4.7 mm
Supported instruction sets	AVX 2.0
Intel Identity Protection Technology version	1.00
Battery capacity	48 Wh
Battery life (max)	10 h
Number of battery cells	6
AC adapter power	65 W
AC adapter frequency	50 - 60 Hz
AC adapter input voltage	100 - 240 V
Password protection type	HDD, Power on, Supervisor
Operating altitude	0 - 2438 m
Storage temperature (T-T)	5 - 43 °C
Operating temperature (T-T)	5 - 35 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	8 - 95 %
Sustainability certificates	RoHS, EPEAT Gold, ENERGY STAR

Weight and Dimensions

Depth	239 mm
Width	344 mm
Weight	2250 g
Height (rear)	34.25 mm
Height (front)	29 mm