Hey,
I've been reading through this thread and a lot of other ones and tried to follow your steps to OC.... I got to the step where you increase by 100mhz, and when I tried to apply that, it went back to normal and wouldn't let me... So I'm thinking it's a locked BIOS or something like that, I will try systool, but i'm new to that program . . . .here are my system specs hopefully this will help a little... I just copied these from spickets of the DxDiag.txt
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_qfe.070227-2300)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
Card name: ATI Mobility Radeon X1600
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x71C5)
DAC type: Internal DAC(400MHz)
Device Key: Enum\PCI\VEN_1002&DEV_71C5&SUBSYS_309F103C&REV_00
Display Memory: 256.0 MB
Current Mode: 1680 x 1050 (32 bit) (60Hz)
Monitor: Default Monitor
Monitor Max Res:
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6677 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 3/2/2007 12:53:38, 265728 bytes
System Model: HP Compaq nx9420 (RB549UT#ABA)
BIOS: KBC Version 54.3C
Processor: Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz (2 CPUs)
Memory: 2048MB RAM
Page File: 595MB used, 2832MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.2180 32bit Unicode
------------------------
Disk & DVD/CD-ROM Drives
------------------------
Drive: C:
Free Space: 27.7 GB
Total Space: 88.6 GB
File System: NTFS
Model: FUJITSU MHW2100BH
Name: ATI Mobility Radeon X1600
Device ID: PCI\VEN_1002&DEV_71C5&SUBSYS_309F103C&REV_00\4&31B7BFB9&0&0008
Driver: C:\WINDOWS\system32\DRIVERS\ati2mtag.sys, 6.14.0010.6677 (English), 3/2/2007 12:53:20, 1972224 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ati2erec.dll, 1.00.0000.0010 (English), 3/2/2007 12:15:10, 49152 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ativvpxx.vp, 3/2/2007 13:32:38, 40688 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ativckxx.vp, 8/23/2006 15:26:56, 2096 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ativcaxx.vp, 1/10/2007 10:32:44, 929 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ativcaxx.cpa, 1/10/2007 10:32:44, 655842 bytes
Driver: C:\WINDOWS\system32\DRIVERS\ativdkxx.vp, 8/23/2006 15:26:56, 2096 bytes
Driver: C:\WINDOWS\system32\ati2dvag.dll, 6.14.0010.6677 (English), 3/2/2007 12:53:38, 265728 bytes
Driver: C:\WINDOWS\system32\ati2cqag.dll, 6.14.0010.0334 (English), 3/2/2007 12:11:46, 348160 bytes
Driver: C:\WINDOWS\system32\Ati2mdxx.exe, 6.14.0010.2495 (English), 3/2/2007 12:47:36, 26112 bytes
Driver: C:\WINDOWS\system32\ati3duag.dll, 6.14.0010.0487 (English), 3/2/2007 12:38:54, 2824512 bytes
Driver: C:\WINDOWS\system32\ativvaxx.dll, 6.14.0010.0144 (English), 3/2/2007 12:29:24, 1288960 bytes
Driver: C:\WINDOWS\system32\atiicdxx.dat, 2/26/2007 07:44:06, 147685 bytes
Driver: C:\WINDOWS\system32\ativvaxx.dat, 3/2/2007 12:29:08, 3107788 bytes
Driver: C:\WINDOWS\system32\ATIDDC.DLL, 6.14.0010.0008 (English), 3/2/2007 12:45:34, 53248 bytes
Driver: C:\WINDOWS\system32\atitvo32.dll, 6.14.0010.4200 (English), 3/2/2007 12:16:24, 17408 bytes
Driver: C:\WINDOWS\system32\ati2evxx.exe, 6.14.0010.4162 (English), 3/2/2007 12:46:14, 446464 bytes
Driver: C:\WINDOWS\system32\ati2evxx.dll, 6.14.0010.4162 (English), 3/2/2007 12:47:20, 110592 bytes
Driver: C:\WINDOWS\system32\atipdlxx.dll, 6.14.0010.2516 (English), 3/2/2007 12:47:52, 118784 bytes
Driver: C:\WINDOWS\system32\ati2edxx.dll, 6.14.0010.2511 (English), 3/2/2007 12:47:32, 42496 bytes
Driver: C:\WINDOWS\system32\atikvmag.dll, 6.14.0010.0052 (English), 3/2/2007 12:17:38, 258048 bytes
Driver: C:\WINDOWS\system32\atifglpf.xml, 2/16/2007 10:04:14, 7072 bytes
Driver: C:\WINDOWS\system32\ATIDEMGX.dll, 2.00.2617.28637 (English), 3/2/2007 12:54:36, 307200 bytes
Driver: C:\WINDOWS\system32\atiiiexx.dll, 6.14.0010.4004 (English), 3/2/2007 12:57:04, 307200 bytes
Driver: C:\WINDOWS\system32\atioglgl.xml, 2/23/2007 11:30:58, 13007 bytes
Driver: C:\WINDOWS\system32\Atioglgl.dll, 6.14.0010.6388 (English), 3/2/2007 12:50:18, 6176768 bytes
Driver: C:\WINDOWS\system32\atioglxx.dll, 6.14.0010.6388 (English), 3/2/2007 12:21:16, 5398528 bytes