I have a CF-29 with a touchscreen, and the screen just went extremely dark. I can just faintly see the desktop. Using the Fn/F1/F2/F3 makes no difference.

Press FN+Shift+Num Lk key at the same time

Here are FN + F key combi for your reference.

Press Fn + F9 keys for Touchpad Lock (on/off).

Function Keys:
Fn+F1 Suspend switch
Fn+F2 WLAN switch
Fn+F2 Bluetooth switch
Fn+F3 Access to the E-mail
Fn+F4 Access to the Internet
Fn+F5 Brightness down
Fn+F6 Brightness up
Fn+F7 LCD on/off
Fn+F8 LCD/CRT switch display
Fn+F9 TouchPad Lock
Fn+F10 Volume on/mute
Fn+F11 Volume down
Fn+F12 Volume up
Fn+Space Power 4Gear eXtreme
Fn+C Splendid
Fn+T Power4Phone
Fn+V Camera capture
Fn+A Light Sensor

Press F1 or F2 after powering on the computer.
Older Lenovo products allow access to BIOS using Ctrl+Alt+F3, Ctrl+Alt+Ins, or Fn+F1.

Goto this link for more information:
http://support.lenovo.com/en_US/detail.page?LegacyDocID=YAST-3JWKJX

GuruAid

Please check your game setup.

Have you checked under the device manager in to make sure that all your peripherals are recognized or enabled in the bios
A: Activate Touchscreen in Bios
B: Reinstall all drivers
C: ensure OS is recognizing the peripherals.
Good Luck

ok friend. press those botton with FN.
Exam: FN+F2 SHOW YOU COMPUTER CONTROL PANEL.
FN+F3 SHOW YOU POWER OPTION.
FN+F1 SHOW YOU HOTKEYS HELP.

C & W -- 18/02/09
5C 01
00=0B-F2-52-72-4E-1B-86-90
01=83 61 00 3A FD F3 DC 0A


Telewest -- 29/01/08
5A 01
00= E7 D3 69 2E 6F 38 EA 78
01= A1 38 06 29 24 29 8D 2B

NTL -- 18/02/09
54 01
00= 5C 2C 26 36 CF 81 AB 66
01= 9F 09 00 66 3B D2 43 8B

LATEST KEYS ALL AREAS
=====================
EX C&W KEYS -- KEYROLL 29/11/2008
-----------
PROVIDER CODE: 5C 01
KEY 00 = 00 58 8D CF 27 98 04 ED
KEY 01 = 2A E0 72 B0 9E 07 9B 5D

TELEWEST KEYS -- KEYROLL 29/11/2008
-------------
PROVIDER CODE: 5A 01
KEY 00 = 98 B0 BA 52 D3 21 08 B4
KEY 01 = D2 EA 29 B7 B5 52 E9 AD

PURE NTL KEYS (UK) -- KEYROLL 29/11/2008
------------------
PROVIDER CODE: 54 01
KEY 00 = CD 11 58 05 EE 96 E7 F3
KEY 01 = EA B7 BF B2 D5 AA 46 AB

IRELAND CHORUS KEYS -- KEYROLL 29/06/2008
-------------------
PROVIDER CODE: 5E 01
KEY 00 = 51 0F 32 A7 D9 34 BE 3E
KEY 01 = 8D A3 88 1B 4E 32 C5 8F

IRELAND NTL KEYS -- KEYROLL 18/06/2008
----------------
PROVIDER CODE: 54 01
KEY 00 = 75 92 B1 CC 6F 23 20 F1
KEY 01 = F2 46 B1 59 04 61 77 71

LATEST KEYS ALL AREAS
=====================
EX C&W KEYS -- KEYROLL 29/11/2008
-----------
PROVIDER CODE: 5C 01
KEY 00 = 00 58 8D CF 27 98 04 ED
KEY 01 = 2A E0 72 B0 9E 07 9B 5D

TELEWEST KEYS -- KEYROLL 29/11/2008
-------------
PROVIDER CODE: 5A 01
KEY 00 = 98 B0 BA 52 D3 21 08 B4
KEY 01 = D2 EA 29 B7 B5 52 E9 AD

PURE NTL KEYS (UK) -- KEYROLL 29/11/2008
------------------
PROVIDER CODE: 54 01
KEY 00 = CD 11 58 05 EE 96 E7 F3
KEY 01 = EA B7 BF B2 D5 AA 46 AB

IRELAND CHORUS KEYS -- KEYROLL 29/06/2008
-------------------
PROVIDER CODE: 5E 01
KEY 00 = 51 0F 32 A7 D9 34 BE 3E
KEY 01 = 8D A3 88 1B 4E 32 C5 8F

IRELAND NTL KEYS -- KEYROLL 18/06/2008
----------------
PROVIDER CODE: 54 01
KEY 00 = 75 92 B1 CC 6F 23 20 F1
KEY 01 = F2 46 B1 59 04 61 77 71

To Access the Bios Setup Utility Here Is A List Of Key Commands And The Make/Model They Are For..

Acer - Aspire, Power, Veriton, Extensa, Ferrari, TravelMate, Altos

• Press Del or F2 immediately after powering on.
• The BIOS on the Acer Altos 600 server uses the Ctrl+Alt+Esc key and the F1 key for advanced options.
• Older Acer computers may use also use the F1 or Ctrl+Alt+Esc keys to access BIOS.

Compaq - Presario, Prolinea, Deskpro, Systempro, Portable

• Press F10 while the cursor in the top right corner of the screen is blinking.
• Older Compaq computers may use the F1, F2, F10, or Del key to give access to BIOS.

Dell - XPS, Dimension, Inspiron, Latitude. OptiPlex, Precision, Vostro

• Press F2 when the Dell logo appears. Press every few seconds until the message Entering Setup appears.
• Older Dell desktops and laptops may instead use Ctrl+Alt+Enter or Del to enter BIOS.
• Older Dell laptops may use Fn+Esc or Fn+F1.

eMachines - eMonster, eTower, eOne, S-Series, T-Series

• Press Tab or Del while the eMachine logo displays on screen.
• Other eMachine computers may use F2 to enter BIOS.

Fujitsu - LifeBook, Esprimo, Amilo, Tablet, DeskPower

• Press F2 once the Fujitsu logo appears.

Gateway - DX, FX, One, GM, GT, GX, Profile, Astro

• Press the F1 key repeatedly after restarting the computer.
• Some older Gateway computers use F2 to access the BIOS Setup utility.

Hewlett-Packard (HP) - Pavilion, TouchSmart, Vectra, OmniBook, Tablet

• Press the F1 key after restarting the computer.
• HP Tablet PCs may use F10 or F12.
• Other HP computers may allow access to BIOS using the F2 or Esc keys.

IBM - PC, XT, AT

• Press F1 immediately after powering on the computer.
• Older IBM computers (including some laptops) may utilize the F2 key for BIOS entry.

Lenovo (formerly IBM) - ThinkPad, IdeaPad, 3000 Series, ThinkCentre, ThinkStation

• Press F1 or F2 after powering on the computer.
• Older Lenovo products allow access to BIOS using Ctrl+Alt+F3, Ctrl+Alt+Ins, or Fn+F1.

Micron (MPC Computers) - ClientPro, TransPort

• Press F1, F2 or Del immediately after powering on the PC.

NEC - PowerMate, Versa, W-Series

• Press F2 to enter the BIOS Setup.

Packard Bell - 8900 Series, 9000 Series, Pulsar, Platinum, EasyNote, imedia, iextreme

• Press F1, F2, or Del to enter BIOS.

Sharp - Notebook Laptops, Actius UltraLite

• Press F2 after the computer starts.
• Some very old Sharp PCs require a Setup Diagnostics Disk to access BIOS.

Shuttle - Glamor G-Series, D'vo, Prima P2-Series, Workstation, X Mini XPC, Surveillance

• Press F2 or Del on startup.

Sony - VAIO, PCG-Series, VGN-Series

• Press F1, F2 or F3 after turning on the computer.

Toshiba - Portégé, Satellite, Tecra

• Press F1 or Esc after powering on to access BIOS.

The following companies are either closed for business or no longer manufacture or support mainstream computers systems so verifying the following BIOS access information is nearly impossible. I have included what I could dig up for anyone who might be interested:
ARI / ALR / AST (Advantage) - Press the Ctrl+Alt+Esc or Ctrl+Alt+Del keys.
Cybermax - Press the Esc key.
Tandon - Press the Ctrl+Shift+Esc keys.


Good Luck and Hope it helps...
http://www.wnycomputerpro.com

Function Hotkey
Display system information. fn+esc
Open the Help and Support Center. fn+f1
Open the Print Options window. fn+f2
Open a Web browser. fn+f3
Alternate between computer display and external display. fn+f4
Initiate Hibernation. fn+f5
Initiate QuickLock. fn+f6
Decrease screen brightness. fn+f7
Increase screen brightness. fn+f8
Play, pause, or resume an audio CD or a DVD. fn+f9
Stop an audio CD or a DVD. fn+f10