Unrelated is the LS120 setting. An LS120 is a type of floppy drive that uses an IDE interface . They are not made any more] They take a 120 MB disk as well as the regular 1.44 MB floppy. Your BIOS probably assumed the the LS120 replaced the floppy.
If you had PC 100 memory and tried to jump to PC133 in one step NO HOPE. The the idea is to increase the memory bus in 1 MHz steps. Probably won't have much luck with PC100.
Also remember that as you increase the memory speed the speed of the PCI and AGP busses increase proportionately, thus knowing what will cease to work fdirst is difficult to know.
There are so many more considerations,especially the CPU valtages, the CPU te,perature control aspects et al.
You really need to go to some of the overclockers forums and get a good overclocking education.
i just upgraded from a voodoo 3 to a ATI AIW 9600 so i was very happy to see the new performance of my computer, i also added two extra fans so i thought i would go and overclock my pc. My mobo is a chaintech CT-7aja0 with an AMD Thunderbird 1.01ghz, they were nice enough to include an easy overclock method in the BIOS and so i thought while i was at it i could tweak up a couple more things... riiiight ... so i went to a couple menus in CMOS Setup Utility at boot... In Advanced Chipset Features, i set the Optimized Defaults (which only seemed to change modem from disabled to enabled). I did the same in Advanced BIOS Features which made this change, my first bootable device was still floppy, second was still HDD-0 but my third had changed from CD-ROM to LS120 i thought it might be some sort of booster !?%^*#!, the computer should know better than i... i had read that OCing is to change the voltage basically so i also did that from Frequency/Voltage Control, i changed PC100 +0.5 to PC133 +0.5 ... i booted and nothing! i checked with a computer whizzer (than me) if i was right about this procedure being OCing and i turned out to be right, even though im still not to sure if i have to flip any switches on the mobo also... now here is the results i got...
1. floppy does not test at boot.
2. hard drives do test and so do CD-ROMS
3. processor does some work then stops working after a minute or two.
4. i cant see what that work is because i have no display output! (not even a c: prompt)
5. monitor stays on standby mode (light flashing)
6. im guessing processing doesnt get to BIOS start because keyboard does not respond (num lock is off)
7. windows install CD does not make any difference to the boot.
8. nothing to do with my AGP ATI, i tried putting the voodoo PCI back in & no display still
after thinking about it for a while and asking some people my friend said that i should take out my battery from the mobo (not the PS) ... im at work now so i wont be able to test out that theory until 8 hours from now so if anyone has any other suggestions please do throw one because the more i get the better i'll feel (my heart beats differently when my computer is not operating properly i feel like im having a heart attack at 22) ... thanks in advance.
-david

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