How do I turn off an R52's internal monitor?

[Flyvapnet]

I'm using an IBM Lenovo R52 notebook and an external SVA monitor.  For reasons optometrists can't figure out, the notebook's own monitor screen causes me considerable eyestrain whilst the larger external monitor screen does not.

Anyway, there's no point in the notebook's internal monitor being active:  It consumes power and emits heat.  I'd like to switch it off.  Alas!  I don't know how.  I've done the Web-search thing; but although this matter (in general) is quite frequently raised elsewhere, nobody seems to know how to shut off a notebook's internal monitor.

Please help!  Your advice will be greatly appreciated and I thank you.  (Kindly resist the urge to pass along advice such as "Close the lid."  It's a bit difficult to access the keyboard that way!)  Below are some system data.

OS Name    Microsoft Windows XP Professional
Version    5.1.2600 Service Pack 3 Build 2600
OS Manufacturer    Microsoft Corporation
System Name    MRCAT-08607D7B3
System Manufacturer    IBM
System Model    1847W76
System Type    X86-based PC
Processor    x86 Family 6 Model 13 Stepping 8 GenuineIntel ~1861 Mhz
BIOS Version/Date    IBM 76ET62WW (1.22 ), 11/25/2005
SMBIOS Version    2.33
Windows Directory    C:\WINDOWS
System Directory    C:\WINDOWS\system32
Boot Device    \Device\HarddiskVolume1
Locale    United States
Hardware Abstraction Layer    Version = "5.1.2600.5512 (xpsp.080413-2111)"
User Name    MRCAT-08607D7B3\Joe
Time Zone    Pacific Standard Time
Total Physical Memory    512.00 MB
Available Physical Memory    29.73 MB
Total Virtual Memory    2.00 GB
Available Virtual Memory    1.96 GB
Page File Space    1.21 GB
Page File    C:\pagefile.sys

Name    ATI MOBILITY RADEON X300
PNP Device ID    PCI\VEN_1002&DEV_5460&SUBSYS_056E1014&REV_00\4&266C3FA7&0&0008
Adapter Type    ATI Radeon Graphics Processor (0x5460), ATI Technologies Inc. compatible
Adapter Description    ATI MOBILITY RADEON X300
Adapter RAM    64.00 MB (67,108,864 bytes)
Installed Drivers    ati2dvag.dll
Driver Version    6.14.10.6683
INF File    oem13.inf (ati2mtag_M22 section)
Color Planes    1
Color Table Entries    4294967296
Resolution    1024 x 768 x 60 hertz
Bits/Pixel    32
Memory Address    0xC0000000-0xC7FFFFFF
I/O Port    0x00003000-0x00003FFF
Memory Address    0xA8100000-0xA81FFFFF
IRQ Channel    IRQ 16
I/O Port    0x000003B0-0x000003BB
I/O Port    0x000003C0-0x000003DF
Memory Address    0xA0000-0xBFFFF
Driver    c:\windows\system32\drivers\ati2mtag.sys (6.14.10.6683, 1.90 MB (1,989,120 bytes), 4/5/2007 3:27 PM)

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[GMAC-R60 Retired Guru]

look in the BIOs you might be able to set it to external only or FN + F7

[Flyvapnet]

Thanks, GMAC-R60, for your reply.  Indeed, Levovo literature insists the F7 key enables switching between external and internal monitors; and it further states the correct key combination is (as you pointed out) Fn + F7.  However, when I use that key combination the only result is that I'm presented with a dialog box enabling "Caret Browsing"; and the same box appears if I use the F7 key alone,

The F7 key itself even has on its surface a depiction of two monitors! The Web pages available via Lenovo Support & downloads - ThinkPad R52 1847-CTO support (link fails to redirect properly) contain no information pertaining to this problem.  Oh, well.

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[GMAC-R60 Retired Guru · Accepted solution]

you may not have the hot keys installed

http://support.lenovo.com/en_US/downloads/detail.page?LegacyDocID=MIGR-74261

Notes

• (For Windows XP only) If this software is updated to version 3.02.0000 or higher, it is also required to update the following software.
  • Access Connectionsto version 5.50 or higher (for the Fn+F5 key function)
  • Power Manager to version 1.70 or higher (for the Fn+F3 key function)

[Flyvapnet]

Yay!  Hooray!  Thank you very much, GMAC-R60, for your advice.  I installed those items you listed and now the Fn +F7 combination actually does what it's supposed to to!  Your help in this matter is greatly appreciated.  Y'all take care now, hear?

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