Cant unlock - AMD sempron 140 2.7

[trents]

You need to make several adjustments at this point in bios:
1. Lower the starting speed of your memory, what we call the "divider". Right now it's configured in bios to run at 1333 and you want to set it to run at 1066. The CPU frequency, the memory frequency, the HT Link frequency and the NB (aka, CPUNB) frequency are tuned to the system bus which is 200 mhz at stock. When you begin to raise the system bus speed these other frequencies increase along with it. Our main goal is to overclock the CPU but any of these other secondary frequencies can reach the point where they cause the system to be unstable. To prevent that, we go into bios and lower them so that we can continue to bump up the system bus and overclock the CPU (aka, FSB or HT Reference).
2. Lower the starting frequency of the HT Link (maybe expressed as a multiplier. Stock is 10x. Lower it to 8x)
3. Lower the NB or CPUNB frequency (from 10x to 9x).
4. Add .025 volts to the CPU voltage

After having done this, please repost with the pics of the three CPU-z tabs.

 

[dtrunk]

your memory is running close to 761 but with the timings of 685, that could cause an issue. you can reduce the ram ratio to drop the speed or manually set the memory timing to 761 speeds or you could try upping the voltage to the memory. for finding the highest fsb, reduce the overall ram speed i'd even go with 609ish... then you know ram timing isn't affecting high fsb. you can have similar issues with ht link/ nb freq if you don't check them every so many FSB bumps.