system disk boot failure after overclock

[alizee]

I just recently put together a system to start overclocking (I'm a noob, but I understand a lot of the mechanics of oc'ing). Here's what's happenning: I've been oc'ing my P4 (system specs at bottom). My RAM tops out at 436, so I've been running at a 5:4. I took my FSB up to 240 (RAM @398) and everything works perfectly at stock voltage (1.525). Once I take it up to 241 or above, it posts fine, but I get the error: 'boot disk failure, insert system disk' after "verifying dmi pool data". I've tried higher voltages, but it didn't seem to make a difference. Ideally, I'd like to get the system up to ~260FSB. What do you think the problem could be?

My drive is a SATA drive, is there a setting like a PCI/AGP lock for SATA? If there is, what is it called? I haven't tried booting knoppix or anything off of a CD so I'll be trying that next.

Thanks for the help.

System Specs:
Pentium 4 2.4c (northwood, HT, 800Mhz), Thermalright XP 120 HSF
Albatron PX915P4C Pro motherboard (915P chipset)
2x512MB OCZ Premier PC3200, 2.5-3-3-7
Sapphire Radeon X800GT
Seagate Barracuda 7200.7 SATA HD
430W Thermaltake PS

 

[imported_Deez]

Most boards that have a lock for the sata only have it for specific sata ports. Usually the first one. I would check the manual or call support. A final resort would be to use IDE, but that is no fun.